441221 has 4 divisors (see below), whose sum is σ = 481344. Its totient is φ = 401100.

The previous prime is 441193. The next prime is 441229. The reversal of 441221 is 122144.

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 441221 - 2⁶ = 441157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441196 and 441205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20045 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (120336).

2⁴⁴¹²²¹ is an apocalyptic number.

It is an amenable number.

441221 is a deficient number, since it is larger than the sum of its proper divisors (40123).

441221 is a wasteful number, since it uses less digits than its factorization.

441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40122.

The product of its digits is 64, while the sum is 14.

The square root of 441221 is about 664.2446838327. The cubic root of 441221 is about 76.1293388579.

Adding to 441221 its reverse (122144), we get a palindrome (563365).

It can be divided in two parts, 441 and 221, that multiplied together give a triangular number (97461 = T₄₄₁).

The spelling of 441221 in words is "four hundred forty-one thousand, two hundred twenty-one", and thus it is an iban number.