221323312323 has 12 divisors (see below), whose sum is σ = 320102808480. Its totient is φ = 147357992016.

The previous prime is 221323312271. The next prime is 221323312363. The reversal of 221323312323 is 323213323122.

221323312323 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 2 + 331 + 2 + 323 = 666.

It is not a de Polignac number, because 221323312323 - 2¹⁶ = 221323246787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221323312363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15899563 + ... + 15913476.

It is an arithmetic number, because the mean of its divisors is an integer number (26675234040).

Almost surely, 2^221323312323 is an apocalyptic number.

221323312323 is a deficient number, since it is larger than the sum of its proper divisors (98779496157).

221323312323 is a wasteful number, since it uses less digits than its factorization.

221323312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31813818 (or 31813815 counting only the distinct ones).

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

Adding to 221323312323 its reverse (323213323122), we get a palindrome (544536635445).

The spelling of 221323312323 in words is "two hundred twenty-one billion, three hundred twenty-three million, three hundred twelve thousand, three hundred twenty-three".