2218213 has 2 divisors, whose sum is σ = 2218214. Its totient is φ = 2218212.

The previous prime is 2218207. The next prime is 2218219. The reversal of 2218213 is 3128122.

2218213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2218207) and next prime (2218219).

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 925444 = 1137^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218213 - 2²¹ = 121061 is a prime.

2218213 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109106 + 1109107.

It is an arithmetic number, because the mean of its divisors is an integer number (1109107).

2^2218213 is an apocalyptic number.

It is an amenable number.

2218213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218213 is an equidigital number, since it uses as much as digits as its factorization.

2218213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 2218213 is about 1489.3666439128. The cubic root of 2218213 is about 130.4170629246.

Subtracting 2218213 from its reverse (3128122), we obtain a palindrome (909909).

The spelling of 2218213 in words is "two million, two hundred eighteen thousand, two hundred thirteen".