12120113221091 has 2 divisors, whose sum is σ = 12120113221092. Its totient is φ = 12120113221090.

The previous prime is 12120113221079. The next prime is 12120113221147. The reversal of 12120113221091 is 19012231102121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120113221091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120113221091.

It is not a weakly prime, because it can be changed into another prime (12120113227091) 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, 6060056610545 + 6060056610546.

It is an arithmetic number, because the mean of its divisors is an integer number (6060056610546).

Almost surely, 2^{12120113221091} is an apocalyptic number.

12120113221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120113221091 is an equidigital number, since it uses as much as digits as its factorization.

12120113221091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 12120113221091 in words is "twelve trillion, one hundred twenty billion, one hundred thirteen million, two hundred twenty-one thousand, ninety-one".