( CNN ) -- 1 in 10 - People around the world who believe the world might end in 2012 , according to a May poll by Reuters . 3 - Different types of calendars used by the Mayans . 5,125 years - Length of the Mayan `` Long Count '' calendar . 144,000 - Days in a b'ak'tun , a cycle in the Mayan calendar which restarts around December 21 . That 's about 394 years . 52 million - Tourists expected to visit Mexico during the `` Year of the Maya '' in 2012 , according to the Mexican Ministry of Tourism . 200,000+ - Searches for `` End of the World '' and related terms on Google on December 20 , the top search as of this writing . 200 - 300 - Calls per week NASA has been receiving recently from people asking if the world really is about to end . 36 - Percentage of Americans who believe increasing severity of recent natural disasters is a sign of the apocalypse . 6 - Times since its discovery in 1989 Asteroid 4179 Toutatis has passed `` close '' to the Earth . The nearest to us it came was 962,951 miles away . $ 50,000 - $ 120,000 - Price of a luxury underground bunker , sold by Atlas Survivor Shelters.com . 189 - Residents of Bugarach , a French village receiving hordes of visitors who believe the only safe place to hide during the apocalypse is inside a `` sacred '' mountain there where extraterrestrials live . 69 - Peak position of `` It 's the End of the World as We Know It ( And I Feel Fine ) , '' by R.E.M. , on the Billboard Hot 100 Singles Chart in 1988 . 2 - Dates in 2011 Christian broadcaster Harold Camping predicted as dates of the end of the world , May 21 and then October 21 . 27 - Percentage of respondents to a National Geographic survey who felt somewhat likely that a catastrophic event would happen on December 21 , 2012 . 27 - Percentage of those surveyed who said they make sure to `` resolve feuds with loved ones '' first if there was a possibility the world might end . 8 - Percentage of those who thought they could only survive about a day in a doomsday scenario with supplies they had at home . Like CNN Living on Facebook .
Some believe the world will end with the Mayan ` ` Long Count '' calendar December 20 . The Maya used three different types of calendars . More than 5000 people believe ` ` end of the world '' terms on December 20 . 52 million people are expected to visit Mexico during ` ` Year of the Maya '' in December .