122139645158 has 32 divisors (see below), whose sum is σ = 190461024000. Its totient is φ = 58674057120.

The previous prime is 122139645157. The next prime is 122139645161. The reversal of 122139645158 is 851546931221.

122139645158 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122139645157) 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, 11160053 + ... + 11170991.

It is an arithmetic number, because the mean of its divisors is an integer number (5951907000).

Almost surely, 2^122139645158 is an apocalyptic number.

122139645158 is a deficient number, since it is larger than the sum of its proper divisors (68321378842).

122139645158 is a wasteful number, since it uses less digits than its factorization.

122139645158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11900.

The product of its digits is 518400, while the sum is 47.

The spelling of 122139645158 in words is "one hundred twenty-two billion, one hundred thirty-nine million, six hundred forty-five thousand, one hundred fifty-eight".