111118811111 has 48 divisors (see below), whose sum is σ = 147328346880. Its totient is φ = 82716923520.

The previous prime is 111118811053. The next prime is 111118811119.

111118811111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111118811111 - 2³⁴ = 93938941927 is a prime.

111118811111 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111118811119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10619000 + ... + 10629458.

It is an arithmetic number, because the mean of its divisors is an integer number (3069340560).

Almost surely, 2^111118811111 is an apocalyptic number.

111118811111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111118811111 is a deficient number, since it is larger than the sum of its proper divisors (36209535769).

111118811111 is a wasteful number, since it uses less digits than its factorization.

111118811111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11364 (or 11357 counting only the distinct ones).

The product of its digits is 64, while the sum is 26.

It can be divided in two parts, 111118 and 811111, that added together give a palindrome (922229).

The spelling of 111118811111 in words is "one hundred eleven billion, one hundred eighteen million, eight hundred eleven thousand, one hundred eleven".