226623221 has 8 divisors (see below), whose sum is σ = 247764864. Its totient is φ = 205571520.

The previous prime is 226623211. The next prime is 226623223. The reversal of 226623221 is 122326622.

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

It is not a de Polignac number, because 226623221 - 2⁶ = 226623157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226623223) 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, 17156 + ... + 27341.

It is an arithmetic number, because the mean of its divisors is an integer number (30970608).

Almost surely, 2^226623221 is an apocalyptic number.

It is an amenable number.

226623221 is a deficient number, since it is larger than the sum of its proper divisors (21141643).

226623221 is a wasteful number, since it uses less digits than its factorization.

226623221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44971.

The product of its digits is 3456, while the sum is 26.

The square root of 226623221 is about 15054.0101301945. The cubic root of 226623221 is about 609.6793271093.

Adding to 226623221 its reverse (122326622), we get a palindrome (348949843).

The spelling of 226623221 in words is "two hundred twenty-six million, six hundred twenty-three thousand, two hundred twenty-one".