12631222277 has 4 divisors (see below), whose sum is σ = 12686866656. Its totient is φ = 12575577900.

The previous prime is 12631222213. The next prime is 12631222301. The reversal of 12631222277 is 77222213621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12631222277 - 2⁶ = 12631222213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631221277) 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 in 3 ways as a sum of consecutive naturals, for example, 27821849 + ... + 27822302.

It is an arithmetic number, because the mean of its divisors is an integer number (3171716664).

Almost surely, 2^12631222277 is an apocalyptic number.

It is an amenable number.

12631222277 is a deficient number, since it is larger than the sum of its proper divisors (55644379).

12631222277 is an equidigital number, since it uses as much as digits as its factorization.

12631222277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55644378.

The product of its digits is 28224, while the sum is 35.

Adding to 12631222277 its reverse (77222213621), we get a palindrome (89853435898).

The spelling of 12631222277 in words is "twelve billion, six hundred thirty-one million, two hundred twenty-two thousand, two hundred seventy-seven".