222221110123 has 4 divisors (see below), whose sum is σ = 222222797608. Its totient is φ = 222219422640.

The previous prime is 222221110109. The next prime is 222221110127. The reversal of 222221110123 is 321011122222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222221110123 - 2⁵ = 222221110091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222221110123.

It is not an unprimeable number, because it can be changed into a prime (222221110127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627786 + ... + 915727.

It is an arithmetic number, because the mean of its divisors is an integer number (55555699402).

Almost surely, 2^222221110123 is an apocalyptic number.

222221110123 is a deficient number, since it is larger than the sum of its proper divisors (1687485).

222221110123 is a wasteful number, since it uses less digits than its factorization.

222221110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687484.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222221110123 its reverse (321011122222), we get a palindrome (543232232345).

The spelling of 222221110123 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".