21312330300 has 54 divisors (see below), whose sum is σ = 66802318128. Its totient is φ = 5683287840.

The previous prime is 21312330269. The next prime is 21312330317. The reversal of 21312330300 is 303321312.

21312330300 is a `hidden beast` number, since 2 + 1 + 31 + 2 + 330 + 300 = 666.

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

It is a congruent number.

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, 11839284 + ... + 11841083.

Almost surely, 2^21312330300 is an apocalyptic number.

21312330300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21312330300 is an abundant number, since it is smaller than the sum of its proper divisors (45489987828).

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

21312330300 is a wasteful number, since it uses less digits than its factorization.

21312330300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23680387 (or 23680377 counting only the distinct ones).

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

Adding to 21312330300 its reverse (303321312), we get a palindrome (21615651612).

The spelling of 21312330300 in words is "twenty-one billion, three hundred twelve million, three hundred thirty thousand, three hundred".