12223231 has 8 divisors (see below), whose sum is σ = 12537504. Its totient is φ = 11912160.

The previous prime is 12223199. The next prime is 12223271. The reversal of 12223231 is 13232221.

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

It is a cyclic number.

It is not a de Polignac number, because 12223231 - 2⁵ = 12223199 is a prime.

It is a super-2 number, since 2×12223231² = 298814752158722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8161 + ... + 9541.

It is an arithmetic number, because the mean of its divisors is an integer number (1567188).

Almost surely, 2^12223231 is an apocalyptic number.

12223231 is a deficient number, since it is larger than the sum of its proper divisors (314273).

12223231 is a wasteful number, since it uses less digits than its factorization.

12223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its digits is 144, while the sum is 16.

The square root of 12223231 is about 3496.1737657044. The cubic root of 12223231 is about 230.3537781727.

Adding to 12223231 its reverse (13232221), we get a palindrome (25455452).

The spelling of 12223231 in words is "twelve million, two hundred twenty-three thousand, two hundred thirty-one".