122100920 has 32 divisors (see below), whose sum is σ = 277456320. Its totient is φ = 48355200.

The previous prime is 122100893. The next prime is 122100931. The reversal of 122100920 is 29001221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11072 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (8670510).

Almost surely, 2^122100920 is an apocalyptic number.

122100920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122100920 is an abundant number, since it is smaller than the sum of its proper divisors (155355400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122100920 is a wasteful number, since it uses less digits than its factorization.

122100920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30335 (or 30331 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 122100920 is about 11049.9285065560. The cubic root of 122100920 is about 496.1042856510.

The spelling of 122100920 in words is "one hundred twenty-two million, one hundred thousand, nine hundred twenty".