122156888961 has 16 divisors (see below), whose sum is σ = 163126212480. Its totient is φ = 81312816000.

The previous prime is 122156888957. The next prime is 122156888963. The reversal of 122156888961 is 169888651221.

It is not a de Polignac number, because 122156888961 - 2² = 122156888957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122156888963) 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 in 15 ways as a sum of consecutive naturals, for example, 9389461 + ... + 9402461.

It is an arithmetic number, because the mean of its divisors is an integer number (10195388280).

Almost surely, 2^122156888961 is an apocalyptic number.

It is an amenable number.

122156888961 is a deficient number, since it is larger than the sum of its proper divisors (40969323519).

122156888961 is a wasteful number, since it uses less digits than its factorization.

122156888961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17576.

The product of its digits is 3317760, while the sum is 57.

The spelling of 122156888961 in words is "one hundred twenty-two billion, one hundred fifty-six million, eight hundred eighty-eight thousand, nine hundred sixty-one".