21303213120120 has 64 divisors (see below), whose sum is σ = 65636926924320. Its totient is φ = 5527320159744.

The previous prime is 21303213120029. The next prime is 21303213120181. The reversal of 21303213120120 is 2102131230312.

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, 2399006047 + ... + 2399014926.

Almost surely, 2^{21303213120120} is an apocalyptic number.

21303213120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303213120120 is an abundant number, since it is smaller than the sum of its proper divisors (44333713804200).

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

21303213120120 is a wasteful number, since it uses less digits than its factorization.

21303213120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798021024 (or 4798021020 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21303213120120 its reverse (2102131230312), we get a palindrome (23405344350432).

The spelling of 21303213120120 in words is "twenty-one trillion, three hundred three billion, two hundred thirteen million, one hundred twenty thousand, one hundred twenty".