111221123179 has 2 divisors, whose sum is σ = 111221123180. Its totient is φ = 111221123178.

The previous prime is 111221123141. The next prime is 111221123183. The reversal of 111221123179 is 971321122111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111221123179 - 2²⁵ = 111187568747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111221123179.

It is not a weakly prime, because it can be changed into another prime (111221123879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610561589 + 55610561590.

It is an arithmetic number, because the mean of its divisors is an integer number (55610561590).

Almost surely, 2^111221123179 is an apocalyptic number.

111221123179 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221123179 is an equidigital number, since it uses as much as digits as its factorization.

111221123179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 31.

The spelling of 111221123179 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred seventy-nine".