21303312322032 has 120 divisors (see below), whose sum is σ = 64309881081264. Its totient is φ = 6544241206272.

The previous prime is 21303312322027. The next prime is 21303312322051. The reversal of 21303312322032 is 23022321330312.

21303312322032 is a `hidden beast` number, since 2 + 1 + 3 + 0 + 331 + 2 + 322 + 0 + 3 + 2 = 666.

It is a super-2 number, since 2×21303312322032² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21303312321987 and 21303312322005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8066998 + ... + 10377045.

Almost surely, 2^{21303312322032} is an apocalyptic number.

It is an amenable number.

21303312322032 is an abundant number, since it is smaller than the sum of its proper divisors (43006568759232).

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

21303312322032 is a wasteful number, since it uses less digits than its factorization.

21303312322032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18444687 (or 18444678 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21303312322032 its reverse (23022321330312), we get a palindrome (44325633652344).

The spelling of 21303312322032 in words is "twenty-one trillion, three hundred three billion, three hundred twelve million, three hundred twenty-two thousand, thirty-two".