Q: Is 1,222,821 a Prime Number?
A: No, 1,222,821 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 1222821 can be evenly divided by 1 3 9 19 57 171 7,151 21,453 64,359 135,869 407,607 and 1,222,821, with no remainder.
Since 1,222,821 cannot be divided by just 1 and 1,222,821, it is not a prime number.