222122222123 has 4 divisors (see below), whose sum is σ = 222138726960. Its totient is φ = 222105717288.

The previous prime is 222122222107. The next prime is 222122222131. The reversal of 222122222123 is 321222221222.

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 222122222123 - 2⁴ = 222122222107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222122242123) 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, 8232215 + ... + 8259152.

It is an arithmetic number, because the mean of its divisors is an integer number (55534681740).

Almost surely, 2^222122222123 is an apocalyptic number.

222122222123 is a deficient number, since it is larger than the sum of its proper divisors (16504837).

222122222123 is a wasteful number, since it uses less digits than its factorization.

222122222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16504836.

The product of its digits is 1536, while the sum is 23.

Adding to 222122222123 its reverse (321222221222), we get a palindrome (543344443345).

Subtracting 222122222123 from its reverse (321222221222), we obtain a palindrome (99099999099).

The spelling of 222122222123 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-three".