224440213 has 4 divisors (see below), whose sum is σ = 228674988. Its totient is φ = 220205440.

The previous prime is 224440201. The next prime is 224440231. The reversal of 224440213 is 312044422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312044422 = 2 ⋅156022211.

It can be written as a sum of positive squares in 2 ways, for example, as 98843364 + 125596849 = 9942^2 + 11207^2 .

It is a cyclic number.

It is not a de Polignac number, because 224440213 - 2⁹ = 224439701 is a prime.

It is a super-2 number, since 2×224440213² = 100746818422970738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224440253) 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, 2117308 + ... + 2117413.

It is an arithmetic number, because the mean of its divisors is an integer number (57168747).

Almost surely, 2^224440213 is an apocalyptic number.

It is an amenable number.

224440213 is a deficient number, since it is larger than the sum of its proper divisors (4234775).

224440213 is an equidigital number, since it uses as much as digits as its factorization.

224440213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234774.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 224440213 is about 14981.3288128924. The cubic root of 224440213 is about 607.7153750959.

Adding to 224440213 its reverse (312044422), we get a palindrome (536484635).

The spelling of 224440213 in words is "two hundred twenty-four million, four hundred forty thousand, two hundred thirteen".