12214231 has 4 divisors (see below), whose sum is σ = 12251464. Its totient is φ = 12177000.

The previous prime is 12214183. The next prime is 12214243. The reversal of 12214231 is 13241221.

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 12214231 - 2²³ = 3825623 is a prime.

It is a super-2 number, since 2×12214231² = 298374877842722, 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 (12214331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18120 + ... + 18781.

It is an arithmetic number, because the mean of its divisors is an integer number (3062866).

Almost surely, 2^12214231 is an apocalyptic number.

12214231 is a deficient number, since it is larger than the sum of its proper divisors (37233).

12214231 is an equidigital number, since it uses as much as digits as its factorization.

12214231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37232.

The product of its digits is 96, while the sum is 16.

The square root of 12214231 is about 3494.8864073100. The cubic root of 12214231 is about 230.2972275754.

Adding to 12214231 its reverse (13241221), we get a palindrome (25455452).

The spelling of 12214231 in words is "twelve million, two hundred fourteen thousand, two hundred thirty-one".