123222111 has 4 divisors (see below), whose sum is σ = 164296152. Its totient is φ = 82148072.

The previous prime is 123222089. The next prime is 123222139. The reversal of 123222111 is 111222321.

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 123222111 - 2¹⁴ = 123205727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123222161) 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, 20537016 + ... + 20537021.

It is an arithmetic number, because the mean of its divisors is an integer number (41074038).

Almost surely, 2^123222111 is an apocalyptic number.

123222111 is a deficient number, since it is larger than the sum of its proper divisors (41074041).

123222111 is an equidigital number, since it uses as much as digits as its factorization.

123222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41074040.

The product of its digits is 48, while the sum is 15.

The square root of 123222111 is about 11100.5455271351. The cubic root of 123222111 is about 497.6181529596.

Adding to 123222111 its reverse (111222321), we get a palindrome (234444432).

The spelling of 123222111 in words is "one hundred twenty-three million, two hundred twenty-two thousand, one hundred eleven".