1111111110111 has 16 divisors (see below), whose sum is σ = 1521828601344. Its totient is φ = 720575260704.

The previous prime is 1111111110103. The next prime is 1111111110113. The reversal of 1111111110111 is 1110111111111.

It is not a de Polignac number, because 1111111110111 - 2³ = 1111111110103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111111110113) 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, 456315 + ... + 1558988.

It is an arithmetic number, because the mean of its divisors is an integer number (95114287584).

Almost surely, 2^{1111111110111} is an apocalyptic number.

1111111110111 is a deficient number, since it is larger than the sum of its proper divisors (410717491233).

1111111110111 is a wasteful number, since it uses less digits than its factorization.

1111111110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020310.

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

Adding to 1111111110111 its reverse (1110111111111), we get a palindrome (2221222221222).

It can be divided in two parts, 111111 and 1110111, that multiplied together give a palindrome (123345543321).

The spelling of 1111111110111 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, one hundred eleven".