Adding to 11101111100011 its reverse (11000111110111), we get a palindrome (22101222210122).
It is a happy number.
It is a weak prime.
It is a cyclic number.
Almost surely, 211101111100011 is an apocalyptic number.
11101111100011 is an equidigital number, since it uses as much as digits as its factorization.
11101111100011 is an evil number, because the sum of its binary digits is even.
The spelling of 11101111100011 in words is "eleven trillion, one hundred one billion, one hundred eleven million, one hundred thousand, eleven".