12311220213277 has 2 divisors, whose sum is σ = 12311220213278. Its totient is φ = 12311220213276.

The previous prime is 12311220213251. The next prime is 12311220213307. The reversal of 12311220213277 is 77231202211321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9043317998521 + 3267902214756 = 3007211^2 + 1807734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311220213277 is a prime.

It is a super-2 number, since 2×12311220213277² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311220213977) 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, 6155610106638 + 6155610106639.

It is an arithmetic number, because the mean of its divisors is an integer number (6155610106639).

Almost surely, 2^{12311220213277} is an apocalyptic number.

It is an amenable number.

12311220213277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311220213277 is an equidigital number, since it uses as much as digits as its factorization.

12311220213277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

Adding to 12311220213277 its reverse (77231202211321), we get a palindrome (89542422424598).

The spelling of 12311220213277 in words is "twelve trillion, three hundred eleven billion, two hundred twenty million, two hundred thirteen thousand, two hundred seventy-seven".