2313120219121 has 2 divisors, whose sum is σ = 2313120219122. Its totient is φ = 2313120219120.

The previous prime is 2313120219077. The next prime is 2313120219169. The reversal of 2313120219121 is 1219120213132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1433156151025 + 879964068096 = 1197145^2 + 938064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313120219121 - 2⁹ = 2313120218609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2313120219121.

It is not a weakly prime, because it can be changed into another prime (2313120219181) 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, 1156560109560 + 1156560109561.

It is an arithmetic number, because the mean of its divisors is an integer number (1156560109561).

Almost surely, 2^{2313120219121} is an apocalyptic number.

It is an amenable number.

2313120219121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313120219121 is an equidigital number, since it uses as much as digits as its factorization.

2313120219121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 2313120219121 in words is "two trillion, three hundred thirteen billion, one hundred twenty million, two hundred nineteen thousand, one hundred twenty-one".