111110111111011 has 16 divisors (see below), whose sum is σ = 121712984445600. Its totient is φ = 100959730912768.

The previous prime is 111110111110961. The next prime is 111110111111023. The reversal of 111110111111011 is 110111111011111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111110111111011 - 2¹⁵ = 111110111078243 is a prime.

It is a super-2 number, since 2×111110111111011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111110111110982 and 111110111111000.

It is not an unprimeable number, because it can be changed into a prime (111110111115011) 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, 3591265 + ... + 15333538.

It is an arithmetic number, because the mean of its divisors is an integer number (7607061527850).

Almost surely, 2^{111110111111011} is an apocalyptic number.

111110111111011 is a deficient number, since it is larger than the sum of its proper divisors (10602873334589).

111110111111011 is a wasteful number, since it uses less digits than its factorization.

111110111111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18936758.

The product of its (nonzero) digits is 1, while the sum is 13.

Adding to 111110111111011 its reverse (110111111011111), we get a palindrome (221221222122122).

It can be divided in two parts, 111 and 110111111011, that multiplied together give a palindrome (12222333322221).

The spelling of 111110111111011 in words is "one hundred eleven trillion, one hundred ten billion, one hundred eleven million, one hundred eleven thousand, eleven".