122077209915 has 32 divisors (see below), whose sum is σ = 221643740160. Its totient is φ = 63722568672.

The previous prime is 122077209893. The next prime is 122077209923. The reversal of 122077209915 is 519902770221.

It is not a de Polignac number, because 122077209915 - 2⁹ = 122077209403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9613609 + ... + 9626298.

It is an arithmetic number, because the mean of its divisors is an integer number (6926366880).

Almost surely, 2^122077209915 is an apocalyptic number.

122077209915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122077209915 is a deficient number, since it is larger than the sum of its proper divisors (99566530245).

122077209915 is a wasteful number, since it uses less digits than its factorization.

122077209915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19239968 (or 19239962 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 122077209915 in words is "one hundred twenty-two billion, seventy-seven million, two hundred nine thousand, nine hundred fifteen".