122856319 has 2 divisors, whose sum is σ = 122856320. Its totient is φ = 122856318.

The previous prime is 122856301. The next prime is 122856329. The reversal of 122856319 is 913658221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122856319 - 2⁵ = 122856287 is a prime.

It is a super-2 number, since 2×122856319² = 30187350236459522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122856329) 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, 61428159 + 61428160.

It is an arithmetic number, because the mean of its divisors is an integer number (61428160).

Almost surely, 2^122856319 is an apocalyptic number.

122856319 is a deficient number, since it is larger than the sum of its proper divisors (1).

122856319 is an equidigital number, since it uses as much as digits as its factorization.

122856319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 122856319 is about 11084.0569738702. The cubic root of 122856319 is about 497.1252621070.

The spelling of 122856319 in words is "one hundred twenty-two million, eight hundred fifty-six thousand, three hundred nineteen".