1213314989917 has 2 divisors, whose sum is σ = 1213314989918. Its totient is φ = 1213314989916.

The previous prime is 1213314989911. The next prime is 1213314989933. The reversal of 1213314989917 is 7199894133121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996774604996 + 216540384921 = 998386^2 + 465339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213314989917 - 2¹¹ = 1213314987869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213314989911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606657494958 + 606657494959.

It is an arithmetic number, because the mean of its divisors is an integer number (606657494959).

Almost surely, 2^{1213314989917} is an apocalyptic number.

It is an amenable number.

1213314989917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213314989917 is an equidigital number, since it uses as much as digits as its factorization.

1213314989917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 58.

The spelling of 1213314989917 in words is "one trillion, two hundred thirteen billion, three hundred fourteen million, nine hundred eighty-nine thousand, nine hundred seventeen".