22131912 has 32 divisors (see below), whose sum is σ = 60360480. Its totient is φ = 6706560.

The previous prime is 22131887. The next prime is 22131913. The reversal of 22131912 is 21913122.

It is not an unprimeable number, because it can be changed into a prime (22131913) 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 7 ways as a sum of consecutive naturals, for example, 41653 + ... + 42180.

It is an arithmetic number, because the mean of its divisors is an integer number (1886265).

Almost surely, 2^22131912 is an apocalyptic number.

22131912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22131912 is an abundant number, since it is smaller than the sum of its proper divisors (38228568).

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

22131912 is a wasteful number, since it uses less digits than its factorization.

22131912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83853 (or 83849 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 22131912 is about 4704.4566104918. The cubic root of 22131912 is about 280.7628517184.

The spelling of 22131912 in words is "twenty-two million, one hundred thirty-one thousand, nine hundred twelve".