111121211222179 has 2 divisors, whose sum is σ = 111121211222180. Its totient is φ = 111121211222178.

The previous prime is 111121211222171. The next prime is 111121211222267. The reversal of 111121211222179 is 971222112121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111121211222179 - 2³ = 111121211222171 is a prime.

It is not a weakly prime, because it can be changed into another prime (111121211222171) 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, 55560605611089 + 55560605611090.

It is an arithmetic number, because the mean of its divisors is an integer number (55560605611090).

Almost surely, 2^{111121211222179} is an apocalyptic number.

111121211222179 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121211222179 is an equidigital number, since it uses as much as digits as its factorization.

111121211222179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 34.

The spelling of 111121211222179 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred seventy-nine".