111422779 has 4 divisors (see below), whose sum is σ = 119993776. Its totient is φ = 102851784.

The previous prime is 111422771. The next prime is 111422791. The reversal of 111422779 is 977224111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111422779 - 2³ = 111422771 is a prime.

It is a super-3 number, since 3×111422779³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111422771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4285479 + ... + 4285504.

It is an arithmetic number, because the mean of its divisors is an integer number (29998444).

Almost surely, 2^111422779 is an apocalyptic number.

111422779 is a deficient number, since it is larger than the sum of its proper divisors (8570997).

111422779 is an equidigital number, since it uses as much as digits as its factorization.

111422779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570996.

The product of its digits is 7056, while the sum is 34.

The square root of 111422779 is about 10555.6988873310. The cubic root of 111422779 is about 481.1989400149.

The spelling of 111422779 in words is "one hundred eleven million, four hundred twenty-two thousand, seven hundred seventy-nine".