21321412312 has 16 divisors (see below), whose sum is σ = 40016818800. Its totient is φ = 10650260640.

The previous prime is 21321412303. The next prime is 21321412331.

21321412312 is nontrivially palindromic in base 10.

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, 1297012 + ... + 1313347.

It is an arithmetic number, because the mean of its divisors is an integer number (2501051175).

Almost surely, 2^21321412312 is an apocalyptic number.

It is an amenable number.

21321412312 is a deficient number, since it is larger than the sum of its proper divisors (18695406488).

21321412312 is a wasteful number, since it uses less digits than its factorization.

21321412312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611386 (or 2611382 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The spelling of 21321412312 in words is "twenty-one billion, three hundred twenty-one million, four hundred twelve thousand, three hundred twelve".