21031130333112 has 16 divisors (see below), whose sum is σ = 52577825832840. Its totient is φ = 7010376777696.

The previous prime is 21031130333009. The next prime is 21031130333131. The reversal of 21031130333112 is 21133303113012.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 876297097213 = 21031130333112 / (2 + 1 + 0 + 3 + 1 + 1 + 3 + 0 + 3 + 3 + 3 + 1 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438148548583 + ... + 438148548630.

Almost surely, 2^{21031130333112} is an apocalyptic number.

It is an amenable number.

21031130333112 is an abundant number, since it is smaller than the sum of its proper divisors (31546695499728).

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

21031130333112 is a wasteful number, since it uses less digits than its factorization.

21031130333112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876297097222 (or 876297097218 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21031130333112 its reverse (21133303113012), we get a palindrome (42164433446124).

The spelling of 21031130333112 in words is "twenty-one trillion, thirty-one billion, one hundred thirty million, three hundred thirty-three thousand, one hundred twelve".