What are the equivalents of millionnaire, multimillionaire and billionaire in Japanese?


I'm talking about the "cultural" ones, because with the yen currency the scale
is completely different (millionnaire with yen is only about having
approximately 10 000 usd so I don't think it's the real equivalent).




[億万長者【おくまんちょうじゃ】](https://eow.alc.co.jp/search?q=%E5%84%84%E4%B8%87%E9%95%B7%E8%80%85&ref=sa)
is the best-known word. Actually there is also a word
[百万長者](http://jisho.org/word/%E7%99%BE%E4%B8%87%E9%95%B7%E8%80%85), but it's
not commonly used for the obvious reason.

ミリオネア is at least understood [because of this TV
program](https://en.wikipedia.org/wiki/Quiz_$_Millionaire), but it's not used
in daily conversations.




[億万長者【おくまんちょうじゃ】](https://eow.alc.co.jp/search?q=%E5%84%84%E4%B8%87%E9%95%B7%E8%80%85&ref=sa)
is the best-known word. Actually there is also a word
[百万長者](http://jisho.org/word/%E7%99%BE%E4%B8%87%E9%95%B7%E8%80%85), but it's
not commonly used for the obvious reason.

ミリオネア is at least understood [because of this TV
program](https://en.wikipedia.org/wiki/Quiz_$_Millionaire), but it's not used
in daily conversations.

