122179097138 has 162 divisors, whose sum is σ = 237554227197. Its totient is φ = 46980743040.

The previous prime is 122179097129. The next prime is 122179097141. The reversal of 122179097138 is 831790971221.

It can be written as a sum of positive squares in 2 ways, for example, as 111821353609 + 10357743529 = 334397^2 + 101773^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247163.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1823568581 + ... + 1823568647.

Almost surely, 2^122179097138 is an apocalyptic number.

122179097138 is a deficient number, since it is larger than the sum of its proper divisors (115375130059).

122179097138 is an equidigital number, since it uses as much as digits as its factorization.

122179097138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 50.

Multiplying 122179097138 by its sum of digits (50), we get a square (6108954856900 = 2471630²).

The spelling of 122179097138 in words is "one hundred twenty-two billion, one hundred seventy-nine million, ninety-seven thousand, one hundred thirty-eight".