12100111010191 has 2 divisors, whose sum is σ = 12100111010192. Its totient is φ = 12100111010190.

The previous prime is 12100111010111. The next prime is 12100111010329. The reversal of 12100111010191 is 19101011100121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12100111010191 - 2³⁵ = 12065751271823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100111010111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050055505095 + 6050055505096.

It is an arithmetic number, because the mean of its divisors is an integer number (6050055505096).

Almost surely, 2^{12100111010191} is an apocalyptic number.

12100111010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100111010191 is an equidigital number, since it uses as much as digits as its factorization.

12100111010191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 12100111010191 in words is "twelve trillion, one hundred billion, one hundred eleven million, ten thousand, one hundred ninety-one".