12120011191 has 2 divisors, whose sum is σ = 12120011192. Its totient is φ = 12120011190.

The previous prime is 12120011143. The next prime is 12120011203. The reversal of 12120011191 is 19111002121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12120011191 - 2⁷ = 12120011063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120011291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060005595 + 6060005596.

It is an arithmetic number, because the mean of its divisors is an integer number (6060005596).

Almost surely, 2^12120011191 is an apocalyptic number.

12120011191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120011191 is an equidigital number, since it uses as much as digits as its factorization.

12120011191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 12120011191 in words is "twelve billion, one hundred twenty million, eleven thousand, one hundred ninety-one".