12020111001191 has 2 divisors, whose sum is σ = 12020111001192. Its totient is φ = 12020111001190.

The previous prime is 12020111001179. The next prime is 12020111001253. The reversal of 12020111001191 is 19110011102021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12020111001191 - 2⁶ = 12020111001127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020111006191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010055500595 + 6010055500596.

It is an arithmetic number, because the mean of its divisors is an integer number (6010055500596).

Almost surely, 2^{12020111001191} is an apocalyptic number.

12020111001191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020111001191 is an equidigital number, since it uses as much as digits as its factorization.

12020111001191 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 12020111001191 in words is "twelve trillion, twenty billion, one hundred eleven million, one thousand, one hundred ninety-one".