21303321220000 has 120 divisors (see below), whose sum is σ = 52899178169376. Its totient is φ = 8441689056000.

The previous prime is 21303321219997. The next prime is 21303321220073. The reversal of 21303321220000 is 2212330312.

It is a self number, because there is not a number n which added to its sum of digits gives 21303321220000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2837412 + ... + 7117411.

Almost surely, 2^{21303321220000} is an apocalyptic number.

21303321220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303321220000 is an abundant number, since it is smaller than the sum of its proper divisors (31595856949376).

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

21303321220000 is an equidigital number, since it uses as much as digits as its factorization.

21303321220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9954960 (or 9954937 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21303321220000 its reverse (2212330312), we get a palindrome (21305533550312).

The spelling of 21303321220000 in words is "twenty-one trillion, three hundred three billion, three hundred twenty-one million, two hundred twenty thousand".