111001111001011 has 24 divisors (see below), whose sum is σ = 143249759340480. Its totient is φ = 85028365875600.

The previous prime is 111001111001003. The next prime is 111001111001047. The reversal of 111001111001011 is 110100111100111.

It is a happy number.

It is not a de Polignac number, because 111001111001011 - 2³ = 111001111001003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111001111001071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1745213805 + ... + 1745277406.

It is an arithmetic number, because the mean of its divisors is an integer number (5968739972520).

Almost surely, 2^{111001111001011} is an apocalyptic number.

111001111001011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111001111001011 is a deficient number, since it is larger than the sum of its proper divisors (32248648339469).

111001111001011 is a wasteful number, since it uses less digits than its factorization.

111001111001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490491295 (or 3490491288 counting only the distinct ones).

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

Adding to 111001111001011 its reverse (110100111100111), we get a palindrome (221101222101122).

The spelling of 111001111001011 in words is "one hundred eleven trillion, one billion, one hundred eleven million, one thousand, eleven".