Q: Is 1,221,005 a Prime Number?
A: No, 1,221,005 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 1221005 can be evenly divided by 1 5 59 295 4,139 20,695 244,201 and 1,221,005, with no remainder.
Since 1,221,005 cannot be divided by just 1 and 1,221,005, it is not a prime number.