2218215 has 8 divisors (see below), whose sum is σ = 3549168. Its totient is φ = 1183040.

The previous prime is 2218213. The next prime is 2218219. The reversal of 2218215 is 5128122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2218215 - 2¹ = 2218213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2218191 and 2218200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218213) 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, 73926 + ... + 73955.

It is an arithmetic number, because the mean of its divisors is an integer number (443646).

2^2218215 is an apocalyptic number.

2218215 is a deficient number, since it is larger than the sum of its proper divisors (1330953).

2218215 is a wasteful number, since it uses less digits than its factorization.

2218215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147889.

The product of its digits is 320, while the sum is 21.

The square root of 2218215 is about 1489.3673153390. The cubic root of 2218215 is about 130.4171021204.

The spelling of 2218215 in words is "two million, two hundred eighteen thousand, two hundred fifteen".