11311303120121 has 2 divisors, whose sum is σ = 11311303120122. Its totient is φ = 11311303120120.

The previous prime is 11311303120093. The next prime is 11311303120207. The reversal of 11311303120121 is 12102130311311.

11311303120121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9984051660025 + 1327251460096 = 3159755^2 + 1152064^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311303120121 - 2³⁰ = 11310229378297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11311303120093 and 11311303120102.

It is not a weakly prime, because it can be changed into another prime (11311303120321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655651560060 + 5655651560061.

It is an arithmetic number, because the mean of its divisors is an integer number (5655651560061).

Almost surely, 2^{11311303120121} is an apocalyptic number.

It is an amenable number.

11311303120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311303120121 is an equidigital number, since it uses as much as digits as its factorization.

11311303120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 11311303120121 its reverse (12102130311311), we get a palindrome (23413433431432).

The spelling of 11311303120121 in words is "eleven trillion, three hundred eleven billion, three hundred three million, one hundred twenty thousand, one hundred twenty-one".