21330113312220 has 48 divisors (see below), whose sum is σ = 59726447491200. Its totient is φ = 5687827338816.

The previous prime is 21330113312203. The next prime is 21330113312309. The reversal of 21330113312220 is 2221331103312.

It is a super-4 number, since 4×21330113312220⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4639942 + ... + 8011821.

It is an arithmetic number, because the mean of its divisors is an integer number (1244300989400).

Almost surely, 2^{21330113312220} is an apocalyptic number.

21330113312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330113312220 is an abundant number, since it is smaller than the sum of its proper divisors (38396334178980).

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

21330113312220 is a wasteful number, since it uses less digits than its factorization.

21330113312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679874 (or 12679872 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21330113312220 its reverse (2221331103312), we get a palindrome (23551444415532).

The spelling of 21330113312220 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirteen million, three hundred twelve thousand, two hundred twenty".