222112121210191 has 2 divisors, whose sum is σ = 222112121210192. Its totient is φ = 222112121210190.

The previous prime is 222112121210183. The next prime is 222112121210219. The reversal of 222112121210191 is 191012121211222.

It is an a-pointer prime, because the next prime (222112121210219) can be obtained adding 222112121210191 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222112121210191 - 2³ = 222112121210183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222112121210171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056060605095 + 111056060605096.

It is an arithmetic number, because the mean of its divisors is an integer number (111056060605096).

Almost surely, 2^{222112121210191} is an apocalyptic number.

222112121210191 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112121210191 is an equidigital number, since it uses as much as digits as its factorization.

222112121210191 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 222112121210191 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred ten thousand, one hundred ninety-one".