21320602312 has 32 divisors (see below), whose sum is σ = 40169052000. Its totient is φ = 10608966144.

The previous prime is 21320602267. The next prime is 21320602313.

21320602312 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21320602313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1646439 + ... + 1659337.

It is an arithmetic number, because the mean of its divisors is an integer number (1255282875).

Almost surely, 2^21320602312 is an apocalyptic number.

It is an amenable number.

21320602312 is a deficient number, since it is larger than the sum of its proper divisors (18848449688).

21320602312 is a wasteful number, since it uses less digits than its factorization.

21320602312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13885 (or 13881 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The spelling of 21320602312 in words is "twenty-one billion, three hundred twenty million, six hundred two thousand, three hundred twelve".