21311330311300 has 72 divisors (see below), whose sum is σ = 46382915331200. Its totient is φ = 8499223209600.

The previous prime is 21311330311289. The next prime is 21311330311331. The reversal of 21311330311300 is 311303311312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412736485 + ... + 412788115.

Almost surely, 2^{21311330311300} is an apocalyptic number.

21311330311300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21311330311300 is an abundant number, since it is smaller than the sum of its proper divisors (25071585019900).

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

21311330311300 is a wasteful number, since it uses less digits than its factorization.

21311330311300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63821 (or 63814 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21311330311300 its reverse (311303311312), we get a palindrome (21622633622612).

The spelling of 21311330311300 in words is "twenty-one trillion, three hundred eleven billion, three hundred thirty million, three hundred eleven thousand, three hundred".