21207850330712 has 32 divisors (see below), whose sum is σ = 39899786706000. Its totient is φ = 10567938585984.

The previous prime is 21207850330687. The next prime is 21207850330757. The reversal of 21207850330712 is 21703305870212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21207850330712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3450518 + ... + 7370330.

Almost surely, 2^{21207850330712} is an apocalyptic number.

It is an amenable number.

21207850330712 is a deficient number, since it is larger than the sum of its proper divisors (18691936375288).

21207850330712 is a wasteful number, since it uses less digits than its factorization.

21207850330712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922115 (or 3922111 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 21207850330712 in words is "twenty-one trillion, two hundred seven billion, eight hundred fifty million, three hundred thirty thousand, seven hundred twelve".