111001111011011 has 16 divisors (see below), whose sum is σ = 120209516935200. Its totient is φ = 101888418647808.

The previous prime is 111001111011001. The next prime is 111001111011031. The reversal of 111001111011011 is 110110111100111.

It is not a de Polignac number, because 111001111011011 - 2¹⁸ = 111001110748867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111001111010983 and 111001111011001.

It is not an unprimeable number, because it can be changed into a prime (111001111011001) 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, 148548335 + ... + 149293703.

It is an arithmetic number, because the mean of its divisors is an integer number (7513094808450).

Almost surely, 2^{111001111011011} is an apocalyptic number.

111001111011011 is a deficient number, since it is larger than the sum of its proper divisors (9208405924189).

111001111011011 is a wasteful number, since it uses less digits than its factorization.

111001111011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809558.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 111001111011011 its reverse (110110111100111), we get a palindrome (221111222111122).

The spelling of 111001111011011 in words is "one hundred eleven trillion, one billion, one hundred eleven million, eleven thousand, eleven".