21131130130232 has 32 divisors (see below), whose sum is σ = 39928665553920. Its totient is φ = 10483507588320.

The previous prime is 21131130130211. The next prime is 21131130130249. The reversal of 21131130130232 is 23203103113112.

It is a super-2 number, since 2×21131130130232² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21131130130198 and 21131130130207.

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, 6499823 + ... + 9192929.

It is an arithmetic number, because the mean of its divisors is an integer number (1247770798560).

Almost surely, 2^{21131130130232} is an apocalyptic number.

It is an amenable number.

21131130130232 is a deficient number, since it is larger than the sum of its proper divisors (18797535423688).

21131130130232 is a wasteful number, since it uses less digits than its factorization.

21131130130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700731 (or 2700727 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21131130130232 its reverse (23203103113112), we get a palindrome (44334233243344).

The spelling of 21131130130232 in words is "twenty-one trillion, one hundred thirty-one billion, one hundred thirty million, one hundred thirty thousand, two hundred thirty-two".