21132230132 has 24 divisors (see below), whose sum is σ = 40273619400. Its totient is φ = 9643746816.

The previous prime is 21132230113. The next prime is 21132230143. The reversal of 21132230132 is 23103223112.

It can be written as a sum of positive squares in 4 ways, for example, as 1519908196 + 19612321936 = 38986^2 + 140044^2 .

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, 2278457 + ... + 2287712.

It is an arithmetic number, because the mean of its divisors is an integer number (1678067475).

Almost surely, 2^21132230132 is an apocalyptic number.

It is an amenable number.

21132230132 is a deficient number, since it is larger than the sum of its proper divisors (19141389268).

21132230132 is a wasteful number, since it uses less digits than its factorization.

21132230132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566275 (or 4566273 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21132230132 its reverse (23103223112), we get a palindrome (44235453244).

The spelling of 21132230132 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirty thousand, one hundred thirty-two".