226247221 has 8 divisors (see below), whose sum is σ = 229743360. Its totient is φ = 222761952.

The previous prime is 226247201. The next prime is 226247243. The reversal of 226247221 is 122742622.

226247221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 226247221 - 2¹³ = 226239029 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 226247221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226247201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45756 + ... + 50458.

It is an arithmetic number, because the mean of its divisors is an integer number (28717920).

Almost surely, 2^226247221 is an apocalyptic number.

It is an amenable number.

226247221 is a deficient number, since it is larger than the sum of its proper divisors (3496139).

226247221 is an equidigital number, since it uses as much as digits as its factorization.

226247221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435.

The product of its digits is 5376, while the sum is 28.

The square root of 226247221 is about 15041.5165791219. The cubic root of 226247221 is about 609.3419590273.

Adding to 226247221 its reverse (122742622), we get a palindrome (348989843).

The spelling of 226247221 in words is "two hundred twenty-six million, two hundred forty-seven thousand, two hundred twenty-one".