21131010032 has 20 divisors (see below), whose sum is σ = 44663271576. Its totient is φ = 9605004480.

The previous prime is 21131009987. The next prime is 21131010079. The reversal of 21131010032 is 23001013112.

It is a junction number, because it is equal to n+sod(n) for n = 21131009989 and 21131010016.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 60031103 + ... + 60031454.

Almost surely, 2^21131010032 is an apocalyptic number.

21131010032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21131010032 is an abundant number, since it is smaller than the sum of its proper divisors (23532261544).

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

21131010032 is a wasteful number, since it uses less digits than its factorization.

21131010032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120062576 (or 120062570 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21131010032 its reverse (23001013112), we get a palindrome (44132023144).

The spelling of 21131010032 in words is "twenty-one billion, one hundred thirty-one million, ten thousand, thirty-two".