2211216 has 40 divisors (see below), whose sum is σ = 6529344. Its totient is φ = 631680.

The previous prime is 2211211. The next prime is 2211217. The reversal of 2211216 is 6121122.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2211195 and 2211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2955 + ... + 3626.

2^2211216 is an apocalyptic number.

It is an amenable number.

2211216 is an abundant number, since it is smaller than the sum of its proper divisors (4318128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211216 is a wasteful number, since it uses less digits than its factorization.

2211216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599 (or 6593 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 2211216 is about 1487.0158035475. The cubic root of 2211216 is about 130.2797918646.

Adding to 2211216 its reverse (6121122), we get a palindrome (8332338).

The spelling of 2211216 in words is "two million, two hundred eleven thousand, two hundred sixteen".