21331332132 has 24 divisors (see below), whose sum is σ = 54297936672. Its totient is φ = 6464040000.

The previous prime is 21331332101. The next prime is 21331332181. The reversal of 21331332132 is 23123313312.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80800369 + ... + 80800632.

It is an arithmetic number, because the mean of its divisors is an integer number (2262414028).

Almost surely, 2^21331332132 is an apocalyptic number.

21331332132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21331332132 is an abundant number, since it is smaller than the sum of its proper divisors (32966604540).

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

21331332132 is a wasteful number, since it uses less digits than its factorization.

21331332132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161601019 (or 161601017 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

Adding to 21331332132 its reverse (23123313312), we get a palindrome (44454645444).

The spelling of 21331332132 in words is "twenty-one billion, three hundred thirty-one million, three hundred thirty-two thousand, one hundred thirty-two".