122156465 has 16 divisors (see below), whose sum is σ = 150563280. Its totient is φ = 95109120.

The previous prime is 122156449. The next prime is 122156479. The reversal of 122156465 is 564651221.

It can be written as a sum of positive squares in 8 ways, for example, as 16128256 + 106028209 = 4016^2 + 10297^2 .

It is not a de Polignac number, because 122156465 - 2⁴ = 122156449 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 27521 + ... + 31649.

It is an arithmetic number, because the mean of its divisors is an integer number (9410205).

Almost surely, 2^122156465 is an apocalyptic number.

It is an amenable number.

122156465 is a deficient number, since it is larger than the sum of its proper divisors (28406815).

122156465 is an equidigital number, since it uses as much as digits as its factorization.

122156465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292.

The product of its digits is 14400, while the sum is 32.

The square root of 122156465 is about 11052.4415854597. The cubic root of 122156465 is about 496.1795019422.

The spelling of 122156465 in words is "one hundred twenty-two million, one hundred fifty-six thousand, four hundred sixty-five".