12101011020191 has 2 divisors, whose sum is σ = 12101011020192. Its totient is φ = 12101011020190.

The previous prime is 12101011020071. The next prime is 12101011020223. The reversal of 12101011020191 is 19102011010121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12101011020191 - 2³⁸ = 11826133113247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101011020491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050505510095 + 6050505510096.

It is an arithmetic number, because the mean of its divisors is an integer number (6050505510096).

Almost surely, 2^{12101011020191} is an apocalyptic number.

12101011020191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101011020191 is an equidigital number, since it uses as much as digits as its factorization.

12101011020191 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 20.

The spelling of 12101011020191 in words is "twelve trillion, one hundred one billion, eleven million, twenty thousand, one hundred ninety-one".