123123222 has 12 divisors (see below), whose sum is σ = 266767020. Its totient is φ = 41041068.

The previous prime is 123123151. The next prime is 123123229. The reversal of 123123222 is 222321321.

It is a super-2 number, since 2×123123222² = 30318655591322568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6840179 = 123123222 / (1 + 2 + 3 + 1 + 2 + 3 + 2 + 2 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 123123195 and 123123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3420072 + ... + 3420107.

It is an arithmetic number, because the mean of its divisors is an integer number (22230585).

Almost surely, 2^123123222 is an apocalyptic number.

123123222 is an abundant number, since it is smaller than the sum of its proper divisors (143643798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123123222 is a wasteful number, since it uses less digits than its factorization.

123123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840187 (or 6840184 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 123123222 is about 11096.0903925662. The cubic root of 123123222 is about 497.4850000949.

Adding to 123123222 its reverse (222321321), we get a palindrome (345444543).

The spelling of 123123222 in words is "one hundred twenty-three million, one hundred twenty-three thousand, two hundred twenty-two".