222113123 has 2 divisors, whose sum is σ = 222113124. Its totient is φ = 222113122.

The previous prime is 222113119. The next prime is 222113137. The reversal of 222113123 is 321311222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222113123 - 2² = 222113119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (222113153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056561 + 111056562.

It is an arithmetic number, because the mean of its divisors is an integer number (111056562).

Almost surely, 2^222113123 is an apocalyptic number.

222113123 is a deficient number, since it is larger than the sum of its proper divisors (1).

222113123 is an equidigital number, since it uses as much as digits as its factorization.

222113123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 17.

The square root of 222113123 is about 14903.4601016006. The cubic root of 222113123 is about 605.6077248299.

Adding to 222113123 its reverse (321311222), we get a palindrome (543424345).

The spelling of 222113123 in words is "two hundred twenty-two million, one hundred thirteen thousand, one hundred twenty-three".