Q: Is 21,662 a Prime Number?
A: No, 21,662 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 21662 can be evenly divided by 1 2 10,831 and 21,662, with no remainder.
Since 21,662 cannot be divided by just 1 and 21,662, it is not a prime number.