21321231202300 has 72 divisors (see below), whose sum is σ = 47344528256256. Its totient is φ = 8329895367360.

The previous prime is 21321231202289. The next prime is 21321231202303. The reversal of 21321231202300 is 320213212312.

It is a super-2 number, since 2×21321231202300² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321231202303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194576127 + ... + 194685673.

It is an arithmetic number, because the mean of its divisors is an integer number (657562892448).

Almost surely, 2^{21321231202300} is an apocalyptic number.

21321231202300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321231202300 is an abundant number, since it is smaller than the sum of its proper divisors (26023297053956).

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

21321231202300 is a wasteful number, since it uses less digits than its factorization.

21321231202300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154867 (or 154860 counting only the distinct ones).

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

Adding to 21321231202300 its reverse (320213212312), we get a palindrome (21641444414612).

The spelling of 21321231202300 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred two thousand, three hundred".