226032221 has 8 divisors (see below), whose sum is σ = 245166264. Its totient is φ = 207546880.

The previous prime is 226032217. The next prime is 226032239. The reversal of 226032221 is 122230622.

It can be written as a sum of positive squares in 4 ways, for example, as 4468996 + 221563225 = 2114^2 + 14885^2 .

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

It is not a de Polignac number, because 226032221 - 2² = 226032217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 226032193 and 226032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226032211) 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, 161450 + ... + 162843.

It is an arithmetic number, because the mean of its divisors is an integer number (30645783).

Almost surely, 2^226032221 is an apocalyptic number.

It is an amenable number.

226032221 is a deficient number, since it is larger than the sum of its proper divisors (19134043).

226032221 is a wasteful number, since it uses less digits than its factorization.

226032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324351.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 226032221 is about 15034.3679946980. The cubic root of 226032221 is about 609.1488810878.

Adding to 226032221 its reverse (122230622), we get a palindrome (348262843).

The spelling of 226032221 in words is "two hundred twenty-six million, thirty-two thousand, two hundred twenty-one".