22131102012 has 24 divisors (see below), whose sum is σ = 51641816016. Its totient is φ = 7376665728.

The previous prime is 22131102001. The next prime is 22131102047. The reversal of 22131102012 is 21020113122.

It is a junction number, because it is equal to n+sod(n) for n = 22131101982 and 22131102000.

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, 322128 + ... + 384744.

It is an arithmetic number, because the mean of its divisors is an integer number (2151742334).

Almost surely, 2^22131102012 is an apocalyptic number.

It is an amenable number.

22131102012 is an abundant number, since it is smaller than the sum of its proper divisors (29510714004).

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

22131102012 is a wasteful number, since it uses less digits than its factorization.

22131102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92077 (or 92075 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22131102012 its reverse (21020113122), we get a palindrome (43151215134).

It can be divided in two parts, 2213110 and 2012, that added together give a palindrome (2215122).

The spelling of 22131102012 in words is "twenty-two billion, one hundred thirty-one million, one hundred two thousand, twelve".