111111111111110 has 64 divisors (see below), whose sum is σ = 219142081152000. Its totient is φ = 40226287046400.

The previous prime is 111111111111053. The next prime is 111111111111229. The reversal of 111111111111110 is 11111111111111.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121767665 + ... + 122676755.

It is an arithmetic number, because the mean of its divisors is an integer number (3424095018000).

Almost surely, 2^{111111111111110} is an apocalyptic number.

111111111111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111111111110 is a deficient number, since it is larger than the sum of its proper divisors (108030970040890).

111111111111110 is a wasteful number, since it uses less digits than its factorization.

111111111111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913997.

The product of its (nonzero) digits is 1, while the sum is 14.

Adding to 111111111111110 its reverse (11111111111111), we get a palindrome (122222222222221).

Subtracting from 111111111111110 its reverse (11111111111111), we obtain a palindrome (99999999999999).

It can be divided in two parts, 11111111 and 1111110, that added together give a palindrome (12222221).

The spelling of 111111111111110 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred ten".