21132582312 has 32 divisors (see below), whose sum is σ = 53032351680. Its totient is φ = 7017408000.

The previous prime is 21132582277. The next prime is 21132582337. The reversal of 21132582312 is 21328523112.

It is a self number, because there is not a number n which added to its sum of digits gives 21132582312.

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 7 ways as a sum of consecutive naturals, for example, 1667689 + ... + 1680312.

It is an arithmetic number, because the mean of its divisors is an integer number (1657260990).

Almost surely, 2^21132582312 is an apocalyptic number.

It is an amenable number.

21132582312 is an abundant number, since it is smaller than the sum of its proper divisors (31899769368).

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

21132582312 is a wasteful number, since it uses less digits than its factorization.

21132582312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348273 (or 3348269 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The spelling of 21132582312 in words is "twenty-one billion, one hundred thirty-two million, five hundred eighty-two thousand, three hundred twelve".