21233302231312 has 20 divisors (see below), whose sum is σ = 41141170811920. Its totient is φ = 10616225892768.

The previous prime is 21233302231247. The next prime is 21233302231381. The reversal of 21233302231312 is 21313220333212.

It is a happy 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, 26164278 + ... + 26963605.

It is an arithmetic number, because the mean of its divisors is an integer number (2057058540596).

Almost surely, 2^{21233302231312} is an apocalyptic number.

It is an amenable number.

21233302231312 is a deficient number, since it is larger than the sum of its proper divisors (19907868580608).

21233302231312 is a wasteful number, since it uses less digits than its factorization.

21233302231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53152870 (or 53152864 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21233302231312 its reverse (21313220333212), we get a palindrome (42546522564524).

The spelling of 21233302231312 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred two million, two hundred thirty-one thousand, three hundred twelve".