21302022213320 has 128 divisors (see below), whose sum is σ = 50833293638400. Its totient is φ = 8017576833024.

The previous prime is 21302022213301. The next prime is 21302022213379. The reversal of 21302022213320 is 2331222020312.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17193236 + ... + 18390524.

It is an arithmetic number, because the mean of its divisors is an integer number (397135106550).

Almost surely, 2^{21302022213320} is an apocalyptic number.

21302022213320 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 21302022213320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25416646819200).

21302022213320 is an abundant number, since it is smaller than the sum of its proper divisors (29531271425080).

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

21302022213320 is a wasteful number, since it uses less digits than its factorization.

21302022213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197639 (or 1197635 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21302022213320 its reverse (2331222020312), we get a palindrome (23633244233632).

The spelling of 21302022213320 in words is "twenty-one trillion, three hundred two billion, twenty-two million, two hundred thirteen thousand, three hundred twenty".