12122222111191 has 2 divisors, whose sum is σ = 12122222111192. Its totient is φ = 12122222111190.

The previous prime is 12122222111183. The next prime is 12122222111221. The reversal of 12122222111191 is 19111122222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122222111191 - 2³ = 12122222111183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122222115191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061111055595 + 6061111055596.

It is an arithmetic number, because the mean of its divisors is an integer number (6061111055596).

Almost surely, 2^{12122222111191} is an apocalyptic number.

12122222111191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122222111191 is an equidigital number, since it uses as much as digits as its factorization.

12122222111191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 28.

The spelling of 12122222111191 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred ninety-one".