12232223 has 4 divisors (see below), whose sum is σ = 12258240. Its totient is φ = 12206208.

The previous prime is 12232217. The next prime is 12232243. The reversal of 12232223 is 32223221.

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 12232223 - 2²² = 8037919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232243) 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, 12290 + ... + 13247.

It is an arithmetic number, because the mean of its divisors is an integer number (3064560).

Almost surely, 2^12232223 is an apocalyptic number.

12232223 is a deficient number, since it is larger than the sum of its proper divisors (26017).

12232223 is an equidigital number, since it uses as much as digits as its factorization.

12232223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26016.

The product of its digits is 288, while the sum is 17.

The square root of 12232223 is about 3497.4595065562. The cubic root of 12232223 is about 230.4102507877.

Adding to 12232223 its reverse (32223221), we get a palindrome (44455444).

The spelling of 12232223 in words is "twelve million, two hundred thirty-two thousand, two hundred twenty-three".