111111101011011 has 16 divisors (see below), whose sum is σ = 148686042155168. Its totient is φ = 73805124672000.

The previous prime is 111111101010929. The next prime is 111111101011021. The reversal of 111111101011011 is 110110101111111.

It is not a de Polignac number, because 111111101011011 - 2³³ = 111102511076419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111101011021) 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, 39527241 + ... + 42244821.

It is an arithmetic number, because the mean of its divisors is an integer number (9292877634698).

Almost surely, 2^{111111101011011} is an apocalyptic number.

111111101011011 is a deficient number, since it is larger than the sum of its proper divisors (37574941144157).

111111101011011 is a wasteful number, since it uses less digits than its factorization.

111111101011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767062.

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

Adding to 111111101011011 its reverse (110110101111111), we get a palindrome (221221202122122).

It can be divided in two parts, 11111110 and 1011011, that added together give a palindrome (12122121).

The spelling of 111111101011011 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred one million, eleven thousand, eleven".