111101011111011 has 128 divisors (see below), whose sum is σ = 158729321447424. Its totient is φ = 68974601794560.

The previous prime is 111101011111003. The next prime is 111101011111021. The reversal of 111101011111011 is 110111110101111.

It is not a de Polignac number, because 111101011111011 - 2³ = 111101011111003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111101011111001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 151570274001 + ... + 151570274733.

It is an arithmetic number, because the mean of its divisors is an integer number (1240072823808).

Almost surely, 2^{111101011111011} is an apocalyptic number.

111101011111011 is a deficient number, since it is larger than the sum of its proper divisors (47628310336413).

111101011111011 is a wasteful number, since it uses less digits than its factorization.

111101011111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913.

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

Adding to 111101011111011 its reverse (110111110101111), we get a palindrome (221212121212122).

The spelling of 111101011111011 in words is "one hundred eleven trillion, one hundred one billion, eleven million, one hundred eleven thousand, eleven".