21000333302120 has 32 divisors (see below), whose sum is σ = 48774967672320. Its totient is φ = 8129161277760.

The previous prime is 21000333302087. The next prime is 21000333302153. The reversal of 21000333302120 is 2120333300012.

It is an interprime number because it is at equal distance from previous prime (21000333302087) and next prime (21000333302153).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21000333302092 and 21000333302101.

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, 8467875092 + ... + 8467877571.

It is an arithmetic number, because the mean of its divisors is an integer number (1524217739760).

Almost surely, 2^{21000333302120} is an apocalyptic number.

21000333302120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000333302120 is an abundant number, since it is smaller than the sum of its proper divisors (27774634370200).

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

21000333302120 is a wasteful number, since it uses less digits than its factorization.

21000333302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16935752705 (or 16935752701 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21000333302120 its reverse (2120333300012), we get a palindrome (23120666602132).

The spelling of 21000333302120 in words is "twenty-one trillion, three hundred thirty-three million, three hundred two thousand, one hundred twenty".