21323212310100 has 72 divisors (see below), whose sum is σ = 63007823991168. Its totient is φ = 5565207180800.

The previous prime is 21323212310093. The next prime is 21323212310111. The reversal of 21323212310100 is 101321232312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 756128181 + ... + 756156380.

It is an arithmetic number, because the mean of its divisors is an integer number (875108666544).

Almost surely, 2^{21323212310100} is an apocalyptic number.

21323212310100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323212310100 is an abundant number, since it is smaller than the sum of its proper divisors (41684611681068).

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

21323212310100 is a wasteful number, since it uses less digits than its factorization.

21323212310100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512284625 (or 1512284618 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21323212310100 its reverse (101321232312), we get a palindrome (21424533542412).

The spelling of 21323212310100 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred twelve million, three hundred ten thousand, one hundred".