21132211012 has 144 divisors (see below), whose sum is σ = 44305470720. Its totient is φ = 8778880000.

The previous prime is 21132210977. The next prime is 21132211073. The reversal of 21132211012 is 21011223112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49030437 + ... + 49030867.

It is an arithmetic number, because the mean of its divisors is an integer number (307676880).

Almost surely, 2^21132211012 is an apocalyptic number.

21132211012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21132211012 is an abundant number, since it is smaller than the sum of its proper divisors (23173259708).

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

21132211012 is a wasteful number, since it uses less digits than its factorization.

21132211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21132211012 its reverse (21011223112), we get a palindrome (42143434124).

It can be divided in two parts, 211 and 32211012, that added together give a palindrome (32211223).

The spelling of 21132211012 in words is "twenty-one billion, one hundred thirty-two million, two hundred eleven thousand, twelve".