111005511055 has 4 divisors (see below), whose sum is σ = 133206613272. Its totient is φ = 88804408840.

The previous prime is 111005511007. The next prime is 111005511121. The reversal of 111005511055 is 550115500111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550115500111 = 1613 ⋅341051147.

It is not a de Polignac number, because 111005511055 - 2¹⁷ = 111005379983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11100551101 + ... + 11100551110.

It is an arithmetic number, because the mean of its divisors is an integer number (33301653318).

Almost surely, 2^111005511055 is an apocalyptic number.

111005511055 is a deficient number, since it is larger than the sum of its proper divisors (22201102217).

111005511055 is an equidigital number, since it uses as much as digits as its factorization.

111005511055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22201102216.

The product of its (nonzero) digits is 625, while the sum is 25.

The spelling of 111005511055 in words is "one hundred eleven billion, five million, five hundred eleven thousand, fifty-five".