21131613112 has 16 divisors (see below), whose sum is σ = 39750840360. Its totient is φ = 10531389024.

The previous prime is 21131613053. The next prime is 21131613121.

It is a happy number.

21131613112 is nontrivially palindromic in base 10.

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, 4299583 + ... + 4304494.

Almost surely, 2^21131613112 is an apocalyptic number.

It is an amenable number.

21131613112 is a deficient number, since it is larger than the sum of its proper divisors (18619227248).

21131613112 is a wasteful number, since it uses less digits than its factorization.

21131613112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604390 (or 8604386 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The spelling of 21131613112 in words is "twenty-one billion, one hundred thirty-one million, six hundred thirteen thousand, one hundred twelve".