It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-11111111110001 is a prime.
It is a Duffinian number.
Almost surely, 211111111110001 is an apocalyptic number.
It is an amenable number.
11111111110001 is an equidigital number, since it uses as much as digits as its factorization.
11111111110001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 83542188823.
Adding to 11111111110001 its reverse (10001111111111), we get a palindrome (21112222221112).
The spelling of 11111111110001 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, one".