222123111321 has 16 divisors (see below), whose sum is σ = 304185317184. Its totient is φ = 144071930304.

The previous prime is 222123111289. The next prime is 222123111361. The reversal of 222123111321 is 123111321222.

It is not a de Polignac number, because 222123111321 - 2⁵ = 222123111289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222123111361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2506450 + ... + 2593556.

It is an arithmetic number, because the mean of its divisors is an integer number (19011582324).

Almost surely, 2^222123111321 is an apocalyptic number.

It is an amenable number.

222123111321 is a deficient number, since it is larger than the sum of its proper divisors (82062205863).

222123111321 is a wasteful number, since it uses less digits than its factorization.

222123111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110120.

The product of its digits is 288, while the sum is 21.

Adding to 222123111321 its reverse (123111321222), we get a palindrome (345234432543).

The spelling of 222123111321 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred eleven thousand, three hundred twenty-one".