21333210213020 has 24 divisors (see below), whose sum is σ = 46344560119200. Its totient is φ = 8239032909632.

The previous prime is 21333210213001. The next prime is 21333210213047. The reversal of 21333210213020 is 2031201233312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18390697880 + ... + 18390699039.

It is an arithmetic number, because the mean of its divisors is an integer number (1931023338300).

Almost surely, 2^{21333210213020} is an apocalyptic number.

21333210213020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333210213020 is an abundant number, since it is smaller than the sum of its proper divisors (25011349906180).

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

21333210213020 is a wasteful number, since it uses less digits than its factorization.

21333210213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36781396957 (or 36781396955 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21333210213020 its reverse (2031201233312), we get a palindrome (23364411446332).

The spelling of 21333210213020 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred ten million, two hundred thirteen thousand, twenty".