21333020233020 has 96 divisors (see below), whose sum is σ = 63814722182400. Its totient is φ = 5308955841024.

The previous prime is 21333020232977. The next prime is 21333020233027. The reversal of 21333020233020 is 2033202033312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333020233027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139574185 + ... + 139726944.

It is an arithmetic number, because the mean of its divisors is an integer number (664736689400).

Almost surely, 2^{21333020233020} is an apocalyptic number.

21333020233020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333020233020 is an abundant number, since it is smaller than the sum of its proper divisors (42481701949380).

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

21333020233020 is a wasteful number, since it uses less digits than its factorization.

21333020233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279301227 (or 279301225 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21333020233020 its reverse (2033202033312), we get a palindrome (23366222266332).

The spelling of 21333020233020 in words is "twenty-one trillion, three hundred thirty-three billion, twenty million, two hundred thirty-three thousand, twenty".