12222231 has 8 divisors (see below), whose sum is σ = 18624384. Its totient is φ = 6984120.

The previous prime is 12222211. The next prime is 12222241. The reversal of 12222231 is 13222221.

It is a happy number.

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

It is not a de Polignac number, because 12222231 - 2¹⁰ = 12221207 is a prime.

It is a super-2 number, since 2×12222231² = 298765861234722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12222231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222211) 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, 290985 + ... + 291026.

It is an arithmetic number, because the mean of its divisors is an integer number (2328048).

Almost surely, 2^12222231 is an apocalyptic number.

12222231 is a deficient number, since it is larger than the sum of its proper divisors (6402153).

12222231 is an equidigital number, since it uses as much as digits as its factorization.

12222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582021.

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

The square root of 12222231 is about 3496.0307492927. The cubic root of 12222231 is about 230.3474961441.

Adding to 12222231 its reverse (13222221), we get a palindrome (25444452).

It can be divided in two parts, 12222 and 231, that multiplied together give a palindrome (2823282).

The spelling of 12222231 in words is "twelve million, two hundred twenty-two thousand, two hundred thirty-one".