12123222 has 8 divisors (see below), whose sum is σ = 24246456. Its totient is φ = 4041072.

The previous prime is 12123217. The next prime is 12123239. The reversal of 12123222 is 22232121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12123222 is an admirable number.

It is a super-2 number, since 2×12123222² = 293945023322568, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010263 + ... + 1010274.

It is an arithmetic number, because the mean of its divisors is an integer number (3030807).

Almost surely, 2^12123222 is an apocalyptic number.

12123222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12123222 is a wasteful number, since it uses less digits than its factorization.

12123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020542.

The product of its digits is 96, while the sum is 15.

The square root of 12123222 is about 3481.8417540147. The cubic root of 12123222 is about 229.7238146756.

Adding to 12123222 its reverse (22232121), we get a palindrome (34355343).

The spelling of 12123222 in words is "twelve million, one hundred twenty-three thousand, two hundred twenty-two".