12251436636281 has 2 divisors, whose sum is σ = 12251436636282. Its totient is φ = 12251436636280.

The previous prime is 12251436636227. The next prime is 12251436636353. The reversal of 12251436636281 is 18263663415221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10062116903056 + 2189319733225 = 3172084^2 + 1479635^2 .

It is a cyclic number.

It is not a de Polignac number, because 12251436636281 - 2²⁶ = 12251369527417 is a prime.

It is a super-2 number, since 2×12251436636281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12251436636211) 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 as a sum of consecutive naturals, namely, 6125718318140 + 6125718318141.

It is an arithmetic number, because the mean of its divisors is an integer number (6125718318141).

Almost surely, 2^{12251436636281} is an apocalyptic number.

It is an amenable number.

12251436636281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251436636281 is an equidigital number, since it uses as much as digits as its factorization.

12251436636281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 50.

The spelling of 12251436636281 in words is "twelve trillion, two hundred fifty-one billion, four hundred thirty-six million, six hundred thirty-six thousand, two hundred eighty-one".