122372109 has 24 divisors (see below), whose sum is σ = 181973792. Its totient is φ = 79198560.

The previous prime is 122372101. The next prime is 122372111. The reversal of 122372109 is 901273221.

It is not a de Polignac number, because 122372109 - 2³ = 122372101 is a prime.

It is a super-2 number, since 2×122372109² = 29949866122215762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122372101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69174 + ... + 70920.

Almost surely, 2^122372109 is an apocalyptic number.

It is an amenable number.

122372109 is a deficient number, since it is larger than the sum of its proper divisors (59601683).

122372109 is a wasteful number, since it uses less digits than its factorization.

122372109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 122372109 is about 11062.1927753949. The cubic root of 122372109 is about 496.4713004772.

The spelling of 122372109 in words is "one hundred twenty-two million, three hundred seventy-two thousand, one hundred nine".