12312042227 has 2 divisors, whose sum is σ = 12312042228. Its totient is φ = 12312042226.

The previous prime is 12312042187. The next prime is 12312042247. The reversal of 12312042227 is 72224021321.

It is a strong prime.

It is an emirp because it is prime and its reverse (72224021321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12312042227 - 2¹⁸ = 12311780083 is a prime.

It is a super-2 number, since 2×12312042227² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12312042196 and 12312042205.

It is not a weakly prime, because it can be changed into another prime (12312042247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156021113 + 6156021114.

It is an arithmetic number, because the mean of its divisors is an integer number (6156021114).

Almost surely, 2^12312042227 is an apocalyptic number.

12312042227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312042227 is an equidigital number, since it uses as much as digits as its factorization.

12312042227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 12312042227 its reverse (72224021321), we get a palindrome (84536063548).

The spelling of 12312042227 in words is "twelve billion, three hundred twelve million, forty-two thousand, two hundred twenty-seven".