221227 has 2 divisors, whose sum is σ = 221228. Its totient is φ = 221226.

The previous prime is 221219. The next prime is 221233. The reversal of 221227 is 722122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221227 - 2³ = 221219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221227.

It is not a weakly prime, because it can be changed into another prime (221327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110613 + 110614.

It is an arithmetic number, because the mean of its divisors is an integer number (110614).

2²²¹²²⁷ is an apocalyptic number.

221227 is a deficient number, since it is larger than the sum of its proper divisors (1).

221227 is an equidigital number, since it uses as much as digits as its factorization.

221227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112, while the sum is 16.

The square root of 221227 is about 470.3477436961. The cubic root of 221227 is about 60.4801291663.

Adding to 221227 its reverse (722122), we get a palindrome (943349).

The spelling of 221227 in words is "two hundred twenty-one thousand, two hundred twenty-seven", and thus it is an iban number.