21320200331212 has 12 divisors (see below), whose sum is σ = 37310419777176. Its totient is φ = 10660080394880.

The previous prime is 21320200331141. The next prime is 21320200331263. The reversal of 21320200331212 is 21213300202312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2367238 + ... + 6945805.

It is an arithmetic number, because the mean of its divisors is an integer number (3109201648098).

Almost surely, 2^{21320200331212} is an apocalyptic number.

It is an amenable number.

21320200331212 is a deficient number, since it is larger than the sum of its proper divisors (15990219445964).

21320200331212 is a wasteful number, since it uses less digits than its factorization.

21320200331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9885368 (or 9885366 counting only the distinct ones).

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

Adding to 21320200331212 its reverse (21213300202312), we get a palindrome (42533500533524).

The spelling of 21320200331212 in words is "twenty-one trillion, three hundred twenty billion, two hundred million, three hundred thirty-one thousand, two hundred twelve".