12223223 has 4 divisors (see below), whose sum is σ = 12507528. Its totient is φ = 11938920.

The previous prime is 12223199. The next prime is 12223271. The reversal of 12223223 is 32232221.

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 12223223 - 2⁸ = 12222967 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 (12223273) 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, 142088 + ... + 142173.

It is an arithmetic number, because the mean of its divisors is an integer number (3126882).

Almost surely, 2^12223223 is an apocalyptic number.

12223223 is a deficient number, since it is larger than the sum of its proper divisors (284305).

12223223 is an equidigital number, since it uses as much as digits as its factorization.

12223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284304.

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

The square root of 12223223 is about 3496.1726215964. The cubic root of 12223223 is about 230.3537279179.

Adding to 12223223 its reverse (32232221), we get a palindrome (44455444).

The spelling of 12223223 in words is "twelve million, two hundred twenty-three thousand, two hundred twenty-three".