2216216 has 16 divisors (see below), whose sum is σ = 4187400. Its totient is φ = 1099584.

The previous prime is 2216213. The next prime is 2216231. The reversal of 2216216 is 6126122.

It is a happy number.

It is a super-3 number, since 3×2216216³ = 32655588333801497088, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116 + ... + 2108.

2^2216216 is an apocalyptic number.

It is an amenable number.

2216216 is a deficient number, since it is larger than the sum of its proper divisors (1971184).

2216216 is a wasteful number, since it uses less digits than its factorization.

2216216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2134 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 2216216 is about 1488.6960737504. The cubic root of 2216216 is about 130.3779141337.

The spelling of 2216216 in words is "two million, two hundred sixteen thousand, two hundred sixteen".