122222112191 has 2 divisors, whose sum is σ = 122222112192. Its totient is φ = 122222112190.

The previous prime is 122222112127. The next prime is 122222112203. The reversal of 122222112191 is 191211222221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122222112191 - 2⁶ = 122222112127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122222112191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122222112121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61111056095 + 61111056096.

It is an arithmetic number, because the mean of its divisors is an integer number (61111056096).

Almost surely, 2^122222112191 is an apocalyptic number.

122222112191 is a deficient number, since it is larger than the sum of its proper divisors (1).

122222112191 is an equidigital number, since it uses as much as digits as its factorization.

122222112191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 26.

The spelling of 122222112191 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, one hundred ninety-one".