21303331302032 has 80 divisors (see below), whose sum is σ = 44728293372672. Its totient is φ = 9770828843520.

The previous prime is 21303331301909. The next prime is 21303331302061. The reversal of 21303331302032 is 23020313330312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 21303331301992 and 21303331302010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133549682 + ... + 133709102.

Almost surely, 2^{21303331302032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21303331302032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22364146686336).

21303331302032 is an abundant number, since it is smaller than the sum of its proper divisors (23424962070640).

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

21303331302032 is a wasteful number, since it uses less digits than its factorization.

21303331302032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163456 (or 163450 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21303331302032 its reverse (23020313330312), we get a palindrome (44323644632344).

The spelling of 21303331302032 in words is "twenty-one trillion, three hundred three billion, three hundred thirty-one million, three hundred two thousand, thirty-two".