111860022005 has 4 divisors (see below), whose sum is σ = 134232026412. Its totient is φ = 89488017600.

The previous prime is 111860021941. The next prime is 111860022013. The reversal of 111860022005 is 500220068111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500220068111 = 197 ⋅2539188163.

It can be written as a sum of positive squares in 2 ways, for example, as 72303983236 + 39556038769 = 268894^2 + 198887^2 .

It is not a de Polignac number, because 111860022005 - 2⁶ = 111860021941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 11186002196 + ... + 11186002205.

It is an arithmetic number, because the mean of its divisors is an integer number (33558006603).

Almost surely, 2^111860022005 is an apocalyptic number.

It is an amenable number.

111860022005 is a deficient number, since it is larger than the sum of its proper divisors (22372004407).

111860022005 is an equidigital number, since it uses as much as digits as its factorization.

111860022005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22372004406.

The product of its (nonzero) digits is 960, while the sum is 26.

The spelling of 111860022005 in words is "one hundred eleven billion, eight hundred sixty million, twenty-two thousand, five".