224220013 has 4 divisors (see below), whose sum is σ = 224497980. Its totient is φ = 223942048.

The previous prime is 224219999. The next prime is 224220023. The reversal of 224220013 is 310022422.

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 153710404 + 70509609 = 12398^2 + 8397^2 .

It is a cyclic number.

It is not a de Polignac number, because 224220013 - 2¹⁷ = 224088941 is a prime.

It is a super-2 number, since 2×224220013² = 100549228459440338, 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 (224220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137770 + ... + 139387.

It is an arithmetic number, because the mean of its divisors is an integer number (56124495).

Almost surely, 2^224220013 is an apocalyptic number.

It is an amenable number.

224220013 is a deficient number, since it is larger than the sum of its proper divisors (277967).

224220013 is an equidigital number, since it uses as much as digits as its factorization.

224220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277966.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 224220013 is about 14973.9778616105. The cubic root of 224220013 is about 607.5165653383.

Adding to 224220013 its reverse (310022422), we get a palindrome (534242435).

The spelling of 224220013 in words is "two hundred twenty-four million, two hundred twenty thousand, thirteen".