11001111000011 has 4 divisors (see below), whose sum is σ = 12001212000024. Its totient is φ = 10001010000000.

The previous prime is 11001111000001. The next prime is 11001111000023. The reversal of 11001111000011 is 11000011110011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11001111000011 - 2³⁸ = 10726233093067 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11001111000001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500050499990 + ... + 500050500011.

It is an arithmetic number, because the mean of its divisors is an integer number (3000303000006).

Almost surely, 2^{11001111000011} is an apocalyptic number.

11001111000011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11001111000011 is a deficient number, since it is larger than the sum of its proper divisors (1000101000013).

11001111000011 is a wasteful number, since it uses less digits than its factorization.

11001111000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000101000012.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 11001111000011 its reverse (11000011110011), we get a palindrome (22001122110022).

It can be divided in two parts, 110011110000 and 11, that added together give a palindrome (110011110011).

The spelling of 11001111000011 in words is "eleven trillion, one billion, one hundred eleven million, eleven", and thus it is an aban number.