2223205 has 4 divisors (see below), whose sum is σ = 2667852. Its totient is φ = 1778560.

The previous prime is 2223197. The next prime is 2223211. The reversal of 2223205 is 5023222.

2223205 = 467² + 468² + ... + 476².

2223205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690561 + 1532644 = 831^2 + 1238^2 .

It is not a de Polignac number, because 2223205 - 2³ = 2223197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 222316 + ... + 222325.

It is an arithmetic number, because the mean of its divisors is an integer number (666963).

2^2223205 is an apocalyptic number.

It is an amenable number.

2223205 is a deficient number, since it is larger than the sum of its proper divisors (444647).

2223205 is an equidigital number, since it uses as much as digits as its factorization.

2223205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444646.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2223205 is about 1491.0415822505. The cubic root of 2223205 is about 130.5148224284.

Adding to 2223205 its reverse (5023222), we get a palindrome (7246427).

The spelling of 2223205 in words is "two million, two hundred twenty-three thousand, two hundred five".