Q: Is 21,066 a Prime Number?
A: No, 21,066 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 21066 can be evenly divided by 1 2 3 6 3,511 7,022 10,533 and 21,066, with no remainder.
Since 21,066 cannot be divided by just 1 and 21,066, it is not a prime number.