12426233023261 has 2 divisors, whose sum is σ = 12426233023262. Its totient is φ = 12426233023260.

The previous prime is 12426233023153. The next prime is 12426233023271. The reversal of 12426233023261 is 16232033262421.

12426233023261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11624860725625 + 801372297636 = 3409525^2 + 895194^2 .

It is a cyclic number.

It is not a de Polignac number, because 12426233023261 - 2²⁹ = 12425696152349 is a prime.

It is a super-2 number, since 2×12426233023261² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12426233023261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12426233023271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213116511630 + 6213116511631.

It is an arithmetic number, because the mean of its divisors is an integer number (6213116511631).

Almost surely, 2^{12426233023261} is an apocalyptic number.

It is an amenable number.

12426233023261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12426233023261 is an equidigital number, since it uses as much as digits as its factorization.

12426233023261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

Adding to 12426233023261 its reverse (16232033262421), we get a palindrome (28658266285682).

The spelling of 12426233023261 in words is "twelve trillion, four hundred twenty-six billion, two hundred thirty-three million, twenty-three thousand, two hundred sixty-one".