226223221 has 8 divisors (see below), whose sum is σ = 258751424. Its totient is φ = 193747680.

The previous prime is 226223219. The next prime is 226223251. The reversal of 226223221 is 122322622.

It is a happy number.

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

It is not a de Polignac number, because 226223221 - 2¹ = 226223219 is a prime.

It is a super-2 number, since 2×226223221² = 102353891439229682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 226223192 and 226223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226223251) 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, 3480 + ... + 21553.

It is an arithmetic number, because the mean of its divisors is an integer number (32343928).

Almost surely, 2^226223221 is an apocalyptic number.

It is an amenable number.

226223221 is a deficient number, since it is larger than the sum of its proper divisors (32528203).

226223221 is a wasteful number, since it uses less digits than its factorization.

226223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26331.

The product of its digits is 1152, while the sum is 22.

The square root of 226223221 is about 15040.7187660697. The cubic root of 226223221 is about 609.3204122077.

Adding to 226223221 its reverse (122322622), we get a palindrome (348545843).

The spelling of 226223221 in words is "two hundred twenty-six million, two hundred twenty-three thousand, two hundred twenty-one".