221241 has 8 divisors (see below), whose sum is σ = 305280. Its totient is φ = 142352.

The previous prime is 221239. The next prime is 221251. The reversal of 221241 is 142122.

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

It is a cyclic number.

It is not a de Polignac number, because 221241 - 2¹ = 221239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221201) 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, 1185 + ... + 1358.

It is an arithmetic number, because the mean of its divisors is an integer number (38160).

2²²¹²⁴¹ is an apocalyptic number.

It is an amenable number.

221241 is a deficient number, since it is larger than the sum of its proper divisors (84039).

221241 is a wasteful number, since it uses less digits than its factorization.

221241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575.

The product of its digits is 32, while the sum is 12.

The square root of 221241 is about 470.3626260663. The cubic root of 221241 is about 60.4814049357.

Adding to 221241 its reverse (142122), we get a palindrome (363363).

The spelling of 221241 in words is "two hundred twenty-one thousand, two hundred forty-one", and thus it is an iban number.