122222609 has 2 divisors, whose sum is σ = 122222610. Its totient is φ = 122222608.

The previous prime is 122222591. The next prime is 122222623. The reversal of 122222609 is 906222221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77933584 + 44289025 = 8828^2 + 6655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122222609 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (122222629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61111304 + 61111305.

It is an arithmetic number, because the mean of its divisors is an integer number (61111305).

Almost surely, 2^122222609 is an apocalyptic number.

It is an amenable number.

122222609 is a deficient number, since it is larger than the sum of its proper divisors (1).

122222609 is an equidigital number, since it uses as much as digits as its factorization.

122222609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 122222609 is about 11055.4334605207. The cubic root of 122222609 is about 496.2690411388.

The spelling of 122222609 in words is "one hundred twenty-two million, two hundred twenty-two thousand, six hundred nine".