122115445139 has 16 divisors (see below), whose sum is σ = 125805926400. Its totient is φ = 118466119296.

The previous prime is 122115445103. The next prime is 122115445187. The reversal of 122115445139 is 931544511221.

It is a cyclic number.

It is not a de Polignac number, because 122115445139 - 2⁸ = 122115444883 is a prime.

It is a super-2 number, since 2×122115445139² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122195445139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4195067 + ... + 4224075.

It is an arithmetic number, because the mean of its divisors is an integer number (7862870400).

Almost surely, 2^122115445139 is an apocalyptic number.

122115445139 is a deficient number, since it is larger than the sum of its proper divisors (3690481261).

122115445139 is a wasteful number, since it uses less digits than its factorization.

122115445139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29714.

The product of its digits is 43200, while the sum is 38.

The spelling of 122115445139 in words is "one hundred twenty-two billion, one hundred fifteen million, four hundred forty-five thousand, one hundred thirty-nine".