111010111101111 has 16 divisors (see below), whose sum is σ = 153580998896864. Its totient is φ = 71264222889984.

The previous prime is 111010111101107. The next prime is 111010111101139. The reversal of 111010111101111 is 111101111010111.

It is not a de Polignac number, because 111010111101111 - 2² = 111010111101107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010111101181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5155097950 + ... + 5155119483.

It is an arithmetic number, because the mean of its divisors is an integer number (9598812431054).

Almost surely, 2^{111010111101111} is an apocalyptic number.

111010111101111 is a deficient number, since it is larger than the sum of its proper divisors (42570887795753).

111010111101111 is a wasteful number, since it uses less digits than its factorization.

111010111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10310217570.

The product of its (nonzero) digits is 1, while the sum is 12.

Adding to 111010111101111 its reverse (111101111010111), we get a palindrome (222111222111222).

The spelling of 111010111101111 in words is "one hundred eleven trillion, ten billion, one hundred eleven million, one hundred one thousand, one hundred eleven".