226220217 has 4 divisors (see below), whose sum is σ = 301626960. Its totient is φ = 150813476.

The previous prime is 226220191. The next prime is 226220221. The reversal of 226220217 is 712022622.

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 226220217 - 2⁷ = 226220089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (226224217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37703367 + ... + 37703372.

It is an arithmetic number, because the mean of its divisors is an integer number (75406740).

Almost surely, 2^226220217 is an apocalyptic number.

It is an amenable number.

226220217 is a deficient number, since it is larger than the sum of its proper divisors (75406743).

226220217 is an equidigital number, since it uses as much as digits as its factorization.

226220217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75406742.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 226220217 is about 15040.6189034893. The cubic root of 226220217 is about 609.3177151568.

Adding to 226220217 its reverse (712022622), we get a palindrome (938242839).

The spelling of 226220217 in words is "two hundred twenty-six million, two hundred twenty thousand, two hundred seventeen".