2199216 has 20 divisors (see below), whose sum is σ = 5681432. Its totient is φ = 733056.

The previous prime is 2199209. The next prime is 2199217. The reversal of 2199216 is 6129912.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199217) 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, 22861 + ... + 22956.

2^2199216 is an apocalyptic number.

It is an amenable number.

2199216 is an abundant number, since it is smaller than the sum of its proper divisors (3482216).

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

2199216 is a wasteful number, since it uses less digits than its factorization.

2199216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45828 (or 45822 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 2199216 is about 1482.9753875233. The cubic root of 2199216 is about 130.0436933997.

It can be divided in two parts, 2199 and 216, that added together give a triangular number (2415 = T₆₉).

The spelling of 2199216 in words is "two million, one hundred ninety-nine thousand, two hundred sixteen".