21331130132 has 24 divisors (see below), whose sum is σ = 41497784832. Its totient is φ = 9527551200.

The previous prime is 21331130123. The next prime is 21331130167. The reversal of 21331130132 is 23103113312.

It is a super-2 number, since 2×21331130132² (a number of 21 digits) contains 22 as substring.

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, 6614744 + ... + 6617967.

It is an arithmetic number, because the mean of its divisors is an integer number (1729074368).

Almost surely, 2^21331130132 is an apocalyptic number.

It is an amenable number.

21331130132 is a deficient number, since it is larger than the sum of its proper divisors (20166654700).

21331130132 is a wasteful number, since it uses less digits than its factorization.

21331130132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13232759 (or 13232757 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21331130132 its reverse (23103113312), we get a palindrome (44434243444).

The spelling of 21331130132 in words is "twenty-one billion, three hundred thirty-one million, one hundred thirty thousand, one hundred thirty-two".