12272231 has 2 divisors, whose sum is σ = 12272232. Its totient is φ = 12272230.

The previous prime is 12272167. The next prime is 12272237. The reversal of 12272231 is 13227221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12272231 - 2⁶ = 12272167 is a prime.

It is a super-2 number, since 2×12272231² = 301215307434722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12272237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6136115 + 6136116.

It is an arithmetic number, because the mean of its divisors is an integer number (6136116).

Almost surely, 2^12272231 is an apocalyptic number.

12272231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12272231 is an equidigital number, since it uses as much as digits as its factorization.

12272231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 20.

The square root of 12272231 is about 3503.1744175819. The cubic root of 12272231 is about 230.6611787799.

Adding to 12272231 its reverse (13227221), we get a palindrome (25499452).

The spelling of 12272231 in words is "twelve million, two hundred seventy-two thousand, two hundred thirty-one".