22131223322012 has 48 divisors (see below), whose sum is σ = 44408778425088. Its totient is φ = 9453456190080.

The previous prime is 22131223321981. The next prime is 22131223322029. The reversal of 22131223322012 is 21022332213122.

It is a congruent number.

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, 223799003 + ... + 223897869.

It is an arithmetic number, because the mean of its divisors is an integer number (925182883856).

Almost surely, 2^{22131223322012} is an apocalyptic number.

It is an amenable number.

22131223322012 is an abundant number, since it is smaller than the sum of its proper divisors (22277555103076).

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

22131223322012 is a wasteful number, since it uses less digits than its factorization.

22131223322012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125226 (or 125224 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 22131223322012 its reverse (21022332213122), we get a palindrome (43153555535134).

The spelling of 22131223322012 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, twelve".