21232331132 has 6 divisors (see below), whose sum is σ = 37156579488. Its totient is φ = 10616165564.

The previous prime is 21232331077. The next prime is 21232331137. The reversal of 21232331132 is 23113323212.

It is a junction number, because it is equal to n+sod(n) for n = 21232331098 and 21232331107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232331137) by changing a digit.

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 as a sum of consecutive naturals, namely, 2654041388 + ... + 2654041395.

It is an arithmetic number, because the mean of its divisors is an integer number (6192763248).

Almost surely, 2^21232331132 is an apocalyptic number.

It is an amenable number.

21232331132 is a deficient number, since it is larger than the sum of its proper divisors (15924248356).

21232331132 is a wasteful number, since it uses less digits than its factorization.

21232331132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308082787 (or 5308082785 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 21232331132 its reverse (23113323212), we get a palindrome (44345654344).

The spelling of 21232331132 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-one thousand, one hundred thirty-two".