12642226443013 has 2 divisors, whose sum is σ = 12642226443014. Its totient is φ = 12642226443012.

The previous prime is 12642226442899. The next prime is 12642226443019. The reversal of 12642226443013 is 31034462224621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12598112581924 + 44113861089 = 3549382^2 + 210033^2 .

It is a cyclic number.

It is not a de Polignac number, because 12642226443013 - 2²⁵ = 12642192888581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642226443019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321113221506 + 6321113221507.

It is an arithmetic number, because the mean of its divisors is an integer number (6321113221507).

Almost surely, 2^{12642226443013} is an apocalyptic number.

It is an amenable number.

12642226443013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642226443013 is an equidigital number, since it uses as much as digits as its factorization.

12642226443013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 40.

Adding to 12642226443013 its reverse (31034462224621), we get a palindrome (43676688667634).

The spelling of 12642226443013 in words is "twelve trillion, six hundred forty-two billion, two hundred twenty-six million, four hundred forty-three thousand, thirteen".