222013123 has 4 divisors (see below), whose sum is σ = 224088120. Its totient is φ = 219938128.

The previous prime is 222013109. The next prime is 222013151. The reversal of 222013123 is 321310222.

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 222013123 - 2¹⁷ = 221882051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222013097 and 222013106.

It is not an unprimeable number, because it can be changed into a prime (222013153) 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, 1037338 + ... + 1037551.

It is an arithmetic number, because the mean of its divisors is an integer number (56022030).

Almost surely, 2^222013123 is an apocalyptic number.

222013123 is a deficient number, since it is larger than the sum of its proper divisors (2074997).

222013123 is a wasteful number, since it uses less digits than its factorization.

222013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074996.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 222013123 is about 14900.1047982892. The cubic root of 222013123 is about 605.5168254081.

Adding to 222013123 its reverse (321310222), we get a palindrome (543323345).

The spelling of 222013123 in words is "two hundred twenty-two million, thirteen thousand, one hundred twenty-three".