Q: Is 216,021 a Prime Number?
A: No, 216,021 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 216021 can be evenly divided by 1 3 13 29 39 87 191 377 573 1,131 2,483 5,539 7,449 16,617 72,007 and 216,021, with no remainder.
Since 216,021 cannot be divided by just 1 and 216,021, it is not a prime number.