12 Just divide by 2
The number 2.
6
If that is one number then the answer is: 111,111,111
7
12 is a composite number itself.
-28
12 is NOT classified as a prime number. It is divisible by more than 1 and itself, (1, 2, 3, 4, 6, and 12), and that makes it composite, not prime.
It is: 12*12 = 144
48
Negative 12 itself is a rational number. It's the ratio of -12 to 1 .
51