121126446544913 has 2 divisors, whose sum is σ = 121126446544914. Its totient is φ = 121126446544912.

The previous prime is 121126446544897. The next prime is 121126446545003. The reversal of 121126446544913 is 319445644621121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94317952098049 + 26808494446864 = 9711743^2 + 5177692^2 .

It is a cyclic number.

It is not a de Polignac number, because 121126446544913 - 2⁴ = 121126446544897 is a prime.

It is not a weakly prime, because it can be changed into another prime (121126446544813) 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, 60563223272456 + 60563223272457.

It is an arithmetic number, because the mean of its divisors is an integer number (60563223272457).

Almost surely, 2^{121126446544913} is an apocalyptic number.

It is an amenable number.

121126446544913 is a deficient number, since it is larger than the sum of its proper divisors (1).

121126446544913 is an equidigital number, since it uses as much as digits as its factorization.

121126446544913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 53.

The spelling of 121126446544913 in words is "one hundred twenty-one trillion, one hundred twenty-six billion, four hundred forty-six million, five hundred forty-four thousand, nine hundred thirteen".