21012332132 has 24 divisors (see below), whose sum is σ = 40120375680. Its totient is φ = 9549649760.

The previous prime is 21012332071. The next prime is 21012332147. The reversal of 21012332132 is 23123321012.

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, 302453 + ... + 365379.

It is an arithmetic number, because the mean of its divisors is an integer number (1671682320).

Almost surely, 2^21012332132 is an apocalyptic number.

21012332132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21012332132 is a deficient number, since it is larger than the sum of its proper divisors (19108043548).

21012332132 is a wasteful number, since it uses less digits than its factorization.

21012332132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70531 (or 70529 counting only the distinct ones).

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

Adding to 21012332132 its reverse (23123321012), we get a palindrome (44135653144).

The spelling of 21012332132 in words is "twenty-one billion, twelve million, three hundred thirty-two thousand, one hundred thirty-two".