21321312202300 has 36 divisors (see below), whose sum is σ = 50473360888776. Its totient is φ = 7753204436800.

The previous prime is 21321312202297. The next prime is 21321312202381. The reversal of 21321312202300 is 320221312312.

It is a super-2 number, since 2×21321312202300² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9691504447 + ... + 9691506646.

It is an arithmetic number, because the mean of its divisors is an integer number (1402037802466).

Almost surely, 2^{21321312202300} is an apocalyptic number.

21321312202300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321312202300 is an abundant number, since it is smaller than the sum of its proper divisors (29152048686476).

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

21321312202300 is a wasteful number, since it uses less digits than its factorization.

21321312202300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19383011118 (or 19383011111 counting only the distinct ones).

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

Adding to 21321312202300 its reverse (320221312312), we get a palindrome (21641533514612).

The spelling of 21321312202300 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twelve million, two hundred two thousand, three hundred".