21336863312 has 10 divisors (see below), whose sum is σ = 41340172698. Its totient is φ = 10668431648.

The previous prime is 21336863269. The next prime is 21336863357.

21336863312 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 20734848016 + 602015296 = 143996^2 + 24536^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666776963 + ... + 666776994.

Almost surely, 2^21336863312 is an apocalyptic number.

It is an amenable number.

21336863312 is a deficient number, since it is larger than the sum of its proper divisors (20003309386).

21336863312 is a wasteful number, since it uses less digits than its factorization.

21336863312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333553965 (or 1333553959 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The spelling of 21336863312 in words is "twenty-one billion, three hundred thirty-six million, eight hundred sixty-three thousand, three hundred twelve".