21312022300 has 36 divisors (see below), whose sum is σ = 46524053520. Its totient is φ = 8473755520.

The previous prime is 21312022279. The next prime is 21312022313. The reversal of 21312022300 is 322021312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621385 + ... + 654784.

It is an arithmetic number, because the mean of its divisors is an integer number (1292334820).

Almost surely, 2^21312022300 is an apocalyptic number.

21312022300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21312022300 is an abundant number, since it is smaller than the sum of its proper divisors (25212031220).

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

21312022300 is a wasteful number, since it uses less digits than its factorization.

21312022300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276350 (or 1276343 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21312022300 its reverse (322021312), we get a palindrome (21634043612).

The spelling of 21312022300 in words is "twenty-one billion, three hundred twelve million, twenty-two thousand, three hundred".