2211 has 8 divisors (see below), whose sum is σ = 3264. Its totient is φ = 1320.
The previous prime is 2207. The next prime is 2213. The reversal of 2211 is 1122.
It is a happy number.
2211 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.
2211 is a nontrivial binomial coefficient, being equal to C(67, 2).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2211 - 22 = 2207 is a prime.
2211 is a lucky number.
It is a nialpdrome in base 10.
It is a zygodrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 2211.
It is not an unprimeable number, because it can be changed into a prime (2213) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 66.
It is an arithmetic number, because the mean of its divisors is an integer number (408).
2211 is the 66-th triangular number.
2211 is a deficient number, since it is larger than the sum of its proper divisors (1053).
2211 is a wasteful number, since it uses less digits than its factorization.
2211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 81.
The product of its digits is 4, while the sum is 6.
The square root of 2211 is about 47.0212717820. The cubic root of 2211 is about 13.0275549651.
Adding to 2211 its reverse (1122), we get a palindrome (3333).
Subtracting from 2211 its reverse (1122), we obtain a square (1089 = 332).
It can be divided in two parts, 221 and 1, that added together give a palindrome (222).
The spelling of 2211 in words is "two thousand, two hundred eleven", and thus it is an iban number.
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