21323220202300 has 144 divisors (see below), whose sum is σ = 46907941449600. Its totient is φ = 8412870585600.

The previous prime is 21323220202261. The next prime is 21323220202331. The reversal of 21323220202300 is 320202232312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1856932359 + ... + 1856943841.

It is an arithmetic number, because the mean of its divisors is an integer number (325749593400).

Almost surely, 2^{21323220202300} is an apocalyptic number.

21323220202300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21323220202300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23453970724800).

21323220202300 is an abundant number, since it is smaller than the sum of its proper divisors (25584721247300).

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

21323220202300 is a wasteful number, since it uses less digits than its factorization.

21323220202300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476 (or 12469 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21323220202300 its reverse (320202232312), we get a palindrome (21643422434612).

The spelling of 21323220202300 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred twenty million, two hundred two thousand, three hundred".