12231186427 has 4 divisors (see below), whose sum is σ = 12398737000. Its totient is φ = 12063635856.

The previous prime is 12231186397. The next prime is 12231186437. The reversal of 12231186427 is 72468113221.

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 12231186427 - 2²⁷ = 12096968699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231186437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83775177 + ... + 83775322.

It is an arithmetic number, because the mean of its divisors is an integer number (3099684250).

Almost surely, 2^12231186427 is an apocalyptic number.

12231186427 is a deficient number, since it is larger than the sum of its proper divisors (167550573).

12231186427 is an equidigital number, since it uses as much as digits as its factorization.

12231186427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167550572.

The product of its digits is 32256, while the sum is 37.

Adding to 12231186427 its reverse (72468113221), we get a palindrome (84699299648).

The spelling of 12231186427 in words is "twelve billion, two hundred thirty-one million, one hundred eighty-six thousand, four hundred twenty-seven".