21323303120000 has 160 divisors (see below), whose sum is σ = 60666322062720. Its totient is φ = 7310846592000.

The previous prime is 21323303119981. The next prime is 21323303120177. The reversal of 21323303120000 is 2130332312.

It is a tau number, because it is divible by the number of its divisors (160).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18478664 + ... + 19598663.

It is an arithmetic number, because the mean of its divisors is an integer number (379164512892).

Almost surely, 2^{21323303120000} is an apocalyptic number.

21323303120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323303120000 is an abundant number, since it is smaller than the sum of its proper divisors (39343018942720).

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

21323303120000 is an frugal number, since it uses more digits than its factorization.

21323303120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38077368 (or 38077341 counting only the distinct ones).

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

Adding to 21323303120000 its reverse (2130332312), we get a palindrome (21325433452312).

The spelling of 21323303120000 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred three million, one hundred twenty thousand".