227221 has 4 divisors (see below), whose sum is σ = 239200. Its totient is φ = 215244.

The previous prime is 227219. The next prime is 227231. The reversal of 227221 is 122722.

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 227221 - 2¹ = 227219 is a prime.

It is a Duffinian number.

227221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 227195 and 227204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227231) 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, 5961 + ... + 5998.

It is an arithmetic number, because the mean of its divisors is an integer number (59800).

2²²⁷²²¹ is an apocalyptic number.

It is an amenable number.

227221 is a deficient number, since it is larger than the sum of its proper divisors (11979).

227221 is a wasteful number, since it uses less digits than its factorization.

227221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11978.

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

The square root of 227221 is about 476.6770395142. The cubic root of 227221 is about 61.0214920237.

Adding to 227221 its reverse (122722), we get a palindrome (349943).

The spelling of 227221 in words is "two hundred twenty-seven thousand, two hundred twenty-one", and thus it is an iban number.