226225221 has 4 divisors (see below), whose sum is σ = 301633632. Its totient is φ = 150816812.

The previous prime is 226225187. The next prime is 226225247. The reversal of 226225221 is 122522622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 226225221 - 2²² = 222030917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 226225191 and 226225200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226225261) 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, 37704201 + ... + 37704206.

It is an arithmetic number, because the mean of its divisors is an integer number (75408408).

Almost surely, 2^226225221 is an apocalyptic number.

It is an amenable number.

226225221 is a deficient number, since it is larger than the sum of its proper divisors (75408411).

226225221 is an equidigital number, since it uses as much as digits as its factorization.

226225221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75408410.

The product of its digits is 1920, while the sum is 24.

The square root of 226225221 is about 15040.7852521070. The cubic root of 226225221 is about 609.3222078342.

Adding to 226225221 its reverse (122522622), we get a palindrome (348747843).

The spelling of 226225221 in words is "two hundred twenty-six million, two hundred twenty-five thousand, two hundred twenty-one".