21331000203300 has 54 divisors (see below), whose sum is σ = 66860835084498. Its totient is φ = 5688266720640.

The previous prime is 21331000203299. The next prime is 21331000203319. The reversal of 21331000203300 is 330200013312.

21331000203300 is a `hidden beast` number, since 2 + 1 + 3 + 310 + 0 + 0 + 20 + 330 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3141252880164 + 18189747323136 = 1772358^2 + 4264944^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11850554769 + ... + 11850556568.

Almost surely, 2^{21331000203300} is an apocalyptic number.

21331000203300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21331000203300 is an abundant number, since it is smaller than the sum of its proper divisors (45529834881198).

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

21331000203300 is a wasteful number, since it uses less digits than its factorization.

21331000203300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23701111357 (or 23701111347 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21331000203300 its reverse (330200013312), we get a palindrome (21661200216612).

The spelling of 21331000203300 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred three thousand, three hundred".