Q: Is 2,121,321 a Prime Number?
A: No, 2,121,321 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 2121321 can be evenly divided by 1 3 29 37 87 111 659 1,073 1,977 3,219 19,111 24,383 57,333 73,149 707,107 and 2,121,321, with no remainder.
Since 2,121,321 cannot be divided by just 1 and 2,121,321, it is not a prime number.