111111111111115 has 8 divisors (see below), whose sum is σ = 133665835413888. Its totient is φ = 88667220835200.

The previous prime is 111111111111053. The next prime is 111111111111229. The reversal of 111111111111115 is 511111111111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111111111111115 - 2⁹ = 111111111110603 is a prime.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 111111111111092 and 111111111111101.

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 7 ways as a sum of consecutive naturals, for example, 27708504507 + ... + 27708508516.

It is an arithmetic number, because the mean of its divisors is an integer number (16708229426736).

Almost surely, 2^{111111111111115} is an apocalyptic number.

111111111111115 is a deficient number, since it is larger than the sum of its proper divisors (22554724302773).

111111111111115 is an equidigital number, since it uses as much as digits as its factorization.

111111111111115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55417013429.

The product of its digits is 5, while the sum is 19.

Adding to 111111111111115 its reverse (511111111111111), we get a palindrome (622222222222226).

It can be divided in two parts, 11111111111111 and 5, that multiplied together give a palindrome (55555555555555).

The spelling of 111111111111115 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred fifteen".