121113023113217 has 2 divisors, whose sum is σ = 121113023113218. Its totient is φ = 121113023113216.

The previous prime is 121113023113177. The next prime is 121113023113223. The reversal of 121113023113217 is 712311320311121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81252033748081 + 39860989365136 = 9013991^2 + 6313556^2 .

It is a cyclic number.

It is not a de Polignac number, because 121113023113217 - 2²⁰ = 121113022064641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121113023113217.

It is not a weakly prime, because it can be changed into another prime (121113023113297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556511556608 + 60556511556609.

It is an arithmetic number, because the mean of its divisors is an integer number (60556511556609).

Almost surely, 2^{121113023113217} is an apocalyptic number.

It is an amenable number.

121113023113217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113023113217 is an equidigital number, since it uses as much as digits as its factorization.

121113023113217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 121113023113217 its reverse (712311320311121), we get a palindrome (833424343424338).

The spelling of 121113023113217 in words is "one hundred twenty-one trillion, one hundred thirteen billion, twenty-three million, one hundred thirteen thousand, two hundred seventeen".