12100122191 has 2 divisors, whose sum is σ = 12100122192. Its totient is φ = 12100122190.

The previous prime is 12100122169. The next prime is 12100122239. The reversal of 12100122191 is 19122100121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12100122191 - 2¹⁰ = 12100121167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100122101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050061095 + 6050061096.

It is an arithmetic number, because the mean of its divisors is an integer number (6050061096).

Almost surely, 2^12100122191 is an apocalyptic number.

12100122191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100122191 is an equidigital number, since it uses as much as digits as its factorization.

12100122191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12100122191 in words is "twelve billion, one hundred million, one hundred twenty-two thousand, one hundred ninety-one".