22120131123212 has 48 divisors (see below), whose sum is σ = 40588977623040. Its totient is φ = 10527980572032.

The previous prime is 22120131123113. The next prime is 22120131123239. The reversal of 22120131123212 is 21232113102122.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47739989 + ... + 48201107.

It is an arithmetic number, because the mean of its divisors is an integer number (845603700480).

Almost surely, 2^{22120131123212} is an apocalyptic number.

It is an amenable number.

22120131123212 is a deficient number, since it is larger than the sum of its proper divisors (18468846499828).

22120131123212 is a wasteful number, since it uses less digits than its factorization.

22120131123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463670 (or 463668 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 22120131123212 its reverse (21232113102122), we get a palindrome (43352244225334).

The spelling of 22120131123212 in words is "twenty-two trillion, one hundred twenty billion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred twelve".