223410221 has 4 divisors (see below), whose sum is σ = 223488732. Its totient is φ = 223331712.

The previous prime is 223410199. The next prime is 223410259. The reversal of 223410221 is 122014322.

223410221 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 135256900 + 88153321 = 11630^2 + 9389^2 .

It is a cyclic number.

It is not a de Polignac number, because 223410221 - 2⁶ = 223410157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223410221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223413221) 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, 34820 + ... + 40733.

It is an arithmetic number, because the mean of its divisors is an integer number (55872183).

Almost surely, 2^223410221 is an apocalyptic number.

It is an amenable number.

223410221 is a deficient number, since it is larger than the sum of its proper divisors (78511).

223410221 is an equidigital number, since it uses as much as digits as its factorization.

223410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78510.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 223410221 is about 14946.9134271929. The cubic root of 223410221 is about 606.7843150586.

Adding to 223410221 its reverse (122014322), we get a palindrome (345424543).

The spelling of 223410221 in words is "two hundred twenty-three million, four hundred ten thousand, two hundred twenty-one".