2122216 has 8 divisors (see below), whose sum is σ = 3979170. Its totient is φ = 1061104.

The previous prime is 2122213. The next prime is 2122231. The reversal of 2122216 is 6122212.

It can be written as a sum of positive squares in only one way, i.e., 2114116 + 8100 = 1454^2 + 90^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2122216.

It is not an unprimeable number, because it can be changed into a prime (2122213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132631 + ... + 132646.

2^2122216 is an apocalyptic number.

It is an amenable number.

2122216 is a deficient number, since it is larger than the sum of its proper divisors (1856954).

2122216 is a wasteful number, since it uses less digits than its factorization.

2122216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265283 (or 265279 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 2122216 is about 1456.7827566250. The cubic root of 2122216 is about 128.5079103065.

Adding to 2122216 its reverse (6122212), we get a palindrome (8244428).

The spelling of 2122216 in words is "two million, one hundred twenty-two thousand, two hundred sixteen".