Adding to 111211 its reverse (112111), we get a palindrome (223322).
Subtracting 111211 from its reverse (112111), we obtain a square (900 = 302).
Multipling 111211 by its reverse (112111), we get a palindrome (12467976421).
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-111211 is a prime.
It is a nialpdrome in base 11.
2111211 is an apocalyptic number.
111211 is an equidigital number, since it uses as much as digits as its factorization.
111211 is an evil number, because the sum of its binary digits is even.
The square root of 111211 is about 333.4831330068. The cubic root of 111211 is about 48.0893878326.
The spelling of 111211 in words is "one hundred eleven thousand, two hundred eleven", and thus it is an iban number.