322222009 has 2 divisors, whose sum is σ = 322222010. Its totient is φ = 322222008.

The previous prime is 322222001. The next prime is 322222013. The reversal of 322222009 is 900222223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293094400 + 29127609 = 17120^2 + 5397^2 .

It is a cyclic number.

It is not a de Polignac number, because 322222009 - 2³ = 322222001 is a prime.

It is not a weakly prime, because it can be changed into another prime (322222001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161111004 + 161111005.

It is an arithmetic number, because the mean of its divisors is an integer number (161111005).

Almost surely, 2^322222009 is an apocalyptic number.

It is an amenable number.

322222009 is a deficient number, since it is larger than the sum of its proper divisors (1).

322222009 is an equidigital number, since it uses as much as digits as its factorization.

322222009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 322222009 is about 17950.5434179581. The cubic root of 322222009 is about 685.5698875159.

The spelling of 322222009 in words is "three hundred twenty-two million, two hundred twenty-two thousand, nine".