111112310105 has 4 divisors (see below), whose sum is σ = 133334772132. Its totient is φ = 88889848080.

The previous prime is 111112310051. The next prime is 111112310117. The reversal of 111112310105 is 501013211111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501013211111 = 7 ⋅71573315873.

It can be written as a sum of positive squares in 2 ways, for example, as 66474761929 + 44637548176 = 257827^2 + 211276^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111112310105 is a prime.

It is a super-2 number, since 2×111112310105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11111231006 + ... + 11111231015.

It is an arithmetic number, because the mean of its divisors is an integer number (33333693033).

Almost surely, 2^111112310105 is an apocalyptic number.

It is an amenable number.

111112310105 is a deficient number, since it is larger than the sum of its proper divisors (22222462027).

111112310105 is an equidigital number, since it uses as much as digits as its factorization.

111112310105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22222462026.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 111112310105 its reverse (501013211111), we get a palindrome (612125521216).

The spelling of 111112310105 in words is "one hundred eleven billion, one hundred twelve million, three hundred ten thousand, one hundred five".