12440231227 has 2 divisors, whose sum is σ = 12440231228. Its totient is φ = 12440231226.

The previous prime is 12440231203. The next prime is 12440231249. The reversal of 12440231227 is 72213204421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12440231227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12440231195 and 12440231204.

It is not a weakly prime, because it can be changed into another prime (12440231327) 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, 6220115613 + 6220115614.

It is an arithmetic number, because the mean of its divisors is an integer number (6220115614).

Almost surely, 2^12440231227 is an apocalyptic number.

12440231227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440231227 is an equidigital number, since it uses as much as digits as its factorization.

12440231227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 12440231227 its reverse (72213204421), we get a palindrome (84653435648).

The spelling of 12440231227 in words is "twelve billion, four hundred forty million, two hundred thirty-one thousand, two hundred twenty-seven".