22011132012 has 12 divisors (see below), whose sum is σ = 51359308056. Its totient is φ = 7337044000.

The previous prime is 22011131993. The next prime is 22011132029. The reversal of 22011132012 is 21023111022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22011131982 and 22011132000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917130489 + ... + 917130512.

It is an arithmetic number, because the mean of its divisors is an integer number (4279942338).

Almost surely, 2^22011132012 is an apocalyptic number.

It is an amenable number.

22011132012 is an abundant number, since it is smaller than the sum of its proper divisors (29348176044).

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

22011132012 is a wasteful number, since it uses less digits than its factorization.

22011132012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834261008 (or 1834261006 counting only the distinct ones).

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

Adding to 22011132012 its reverse (21023111022), we get a palindrome (43034243034).

The spelling of 22011132012 in words is "twenty-two billion, eleven million, one hundred thirty-two thousand, twelve".