2216 has 8 divisors (see below), whose sum is σ = 4170. Its totient is φ = 1104.

The previous prime is 2213. The next prime is 2221. The reversal of 2216 is 6122.

2216 = T₈ + T₉ + ... + T₂₃.

2216 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in only one way, i.e., 2116 + 100 = 46^2 + 10^2 .

It is a tau number, because it is divible by the number of its divisors (8).

2216 is an undulating number in base 16.

It is a plaindrome in base 12.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 2197 and 2206.

It is not an unprimeable number, because it can be changed into a prime (2213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131 + ... + 146.

2²²¹⁶ is an apocalyptic number.

It is an amenable number.

2216 is a deficient number, since it is larger than the sum of its proper divisors (1954).

2216 is a wasteful number, since it uses less digits than its factorization.

2216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 279 counting only the distinct ones).

The product of its digits is 24, while the sum is 11.

The square root of 2216 is about 47.0744091838. The cubic root of 2216 is about 13.0373678303.

Adding to 2216 its reverse (6122), we get a palindrome (8338).

It can be divided in two parts, 221 and 6, that multiplied together give a triangular number (1326 = T₅₁).

The spelling of 2216 in words is "two thousand, two hundred sixteen".