In this task you will be given a list of numbers. You should remove any number that is not an integer (whole number). If every number is not an whole number then an empty list ("[]") should be returned. Otherwise, answer with the list of whole numbers separated by comma inside brackets.
[21.104, -41, -28, -57, -100, 31.668, 23.332, 22, 51.835, 2.495, -13.728]