The answer is 84.

Is 84 a multiple of 12? YES
Is 84 a 2 digit number? YES
In 84, is the tens digit is larger than the ones digit my more than 3? YES, THE TENS DIGIT IS LARGER THAN THE ONES DIGIT BY FOUR.
In 84,is the sum of the digits is greater than 10? YES, THE SUM OF ITS DIGITS IS 12

The answer is 84.