1011100111101 has 12 divisors (see below), whose sum is σ = 1514569714112. Its totient is φ = 674066740572.

The previous prime is 1011100111093. The next prime is 1011100111169. The reversal of 1011100111101 is 1011110011101.

It is not a de Polignac number, because 1011100111101 - 2³ = 1011100111093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011100111201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2080452661 + ... + 2080453146.

Almost surely, 2^{1011100111101} is an apocalyptic number.

It is an amenable number.

1011100111101 is a deficient number, since it is larger than the sum of its proper divisors (503469603011).

1011100111101 is an frugal number, since it uses more digits than its factorization.

1011100111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160905822 (or 4160905810 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1011100111101 its reverse (1011110011101), we get a palindrome (2022210122202).

The spelling of 1011100111101 in words is "one trillion, eleven billion, one hundred million, one hundred eleven thousand, one hundred one".