21320300023212 has 24 divisors (see below), whose sum is σ = 51352120486912. Its totient is φ = 6877516136400.

The previous prime is 21320300023201. The next prime is 21320300023277. The reversal of 21320300023212 is 21232000302312.

It is a happy 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, 28656316864 + ... + 28656317607.

Almost surely, 2^{21320300023212} is an apocalyptic number.

It is an amenable number.

21320300023212 is an abundant number, since it is smaller than the sum of its proper divisors (30031820463700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21320300023212 is a wasteful number, since it uses less digits than its factorization.

21320300023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57312634509 (or 57312634507 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21320300023212 its reverse (21232000302312), we get a palindrome (42552300325524).

The spelling of 21320300023212 in words is "twenty-one trillion, three hundred twenty billion, three hundred million, twenty-three thousand, two hundred twelve".