12642226442899 has 2 divisors, whose sum is σ = 12642226442900. Its totient is φ = 12642226442898.

The previous prime is 12642226442831. The next prime is 12642226443013. The reversal of 12642226442899 is 99824462224621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12642226442899 - 2¹³ = 12642226434707 is a prime.

It is not a weakly prime, because it can be changed into another prime (12642226442809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321113221449 + 6321113221450.

It is an arithmetic number, because the mean of its divisors is an integer number (6321113221450).

Almost surely, 2^{12642226442899} is an apocalyptic number.

12642226442899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642226442899 is an equidigital number, since it uses as much as digits as its factorization.

12642226442899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47775744, while the sum is 61.

The spelling of 12642226442899 in words is "twelve trillion, six hundred forty-two billion, two hundred twenty-six million, four hundred forty-two thousand, eight hundred ninety-nine".