111011111011 has 16 divisors (see below), whose sum is σ = 115770698496. Its totient is φ = 106326000000.

The previous prime is 111011110999. The next prime is 111011111017. The reversal of 111011111011 is 110111110111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111011111011 - 2⁵ = 111011110979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111011111017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11207161 + ... + 11217061.

It is an arithmetic number, because the mean of its divisors is an integer number (7235668656).

Almost surely, 2^111011111011 is an apocalyptic number.

111011111011 is a deficient number, since it is larger than the sum of its proper divisors (4759587485).

111011111011 is a wasteful number, since it uses less digits than its factorization.

111011111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13614.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111011111011 its reverse (110111110111), we get a palindrome (221122221122).

It can be divided in two parts, 1110111 and 11011, that multiplied together give a palindrome (12223432221).

The spelling of 111011111011 in words is "one hundred eleven billion, eleven million, one hundred eleven thousand, eleven".