Definition: 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.
Input: [-0.001, 5.571, -50.774, 2, -11.495, -18, 9.468, 11, -21.148, 64.207, -4.966]

[2, -18, 11]