122621417025 has 24 divisors (see below), whose sum is σ = 209724910080. Its totient is φ = 63142981440.

The previous prime is 122621416997. The next prime is 122621417041. The reversal of 122621417025 is 520714126221.

It is not a de Polignac number, because 122621417025 - 2²⁰ = 122620368449 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 28186657 + ... + 28191006.

It is an arithmetic number, because the mean of its divisors is an integer number (8738537920).

Almost surely, 2^122621417025 is an apocalyptic number.

122621417025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122621417025 is a deficient number, since it is larger than the sum of its proper divisors (87103493055).

122621417025 is a wasteful number, since it uses less digits than its factorization.

122621417025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56377705 (or 56377700 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 122621417025 in words is "one hundred twenty-two billion, six hundred twenty-one million, four hundred seventeen thousand, twenty-five".