22021132012 has 48 divisors (see below), whose sum is σ = 44477959680. Its totient is φ = 9434577600.

The previous prime is 22021132009. The next prime is 22021132027. The reversal of 22021132012 is 21023112022.

It is a happy 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, 97837 + ... + 231547.

It is an arithmetic number, because the mean of its divisors is an integer number (926624160).

Almost surely, 2^22021132012 is an apocalyptic number.

22021132012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22021132012 is an abundant number, since it is smaller than the sum of its proper divisors (22456827668).

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

22021132012 is a wasteful number, since it uses less digits than its factorization.

22021132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133942 (or 133940 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22021132012 its reverse (21023112022), we get a palindrome (43044244034).

The spelling of 22021132012 in words is "twenty-two billion, twenty-one million, one hundred thirty-two thousand, twelve".