21323332032312 has 16 divisors (see below), whose sum is σ = 53308330080840. Its totient is φ = 7107777344096.

The previous prime is 21323332032271. The next prime is 21323332032329. The reversal of 21323332032312 is 21323023332312.

It is a self number, because there is not a number n which added to its sum of digits gives 21323332032312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444236083983 + ... + 444236084030.

Almost surely, 2^{21323332032312} is an apocalyptic number.

It is an amenable number.

21323332032312 is an abundant number, since it is smaller than the sum of its proper divisors (31984998048528).

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

21323332032312 is a wasteful number, since it uses less digits than its factorization.

21323332032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888472168022 (or 888472168018 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 21323332032312 its reverse (21323023332312), we get a palindrome (42646355364624).

The spelling of 21323332032312 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty-two million, thirty-two thousand, three hundred twelve".