223221 has 8 divisors (see below), whose sum is σ = 305824. Its totient is φ = 144720.

The previous prime is 223219. The next prime is 223229. The reversal of 223221 is 122322.

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

It is not a de Polignac number, because 223221 - 2¹ = 223219 is a prime.

It is a super-3 number, since 3×223221³ = 33367710037268583, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223197 and 223206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (38228).

2²²³²²¹ is an apocalyptic number.

It is an amenable number.

223221 is a deficient number, since it is larger than the sum of its proper divisors (82603).

223221 is a wasteful number, since it uses less digits than its factorization.

223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051.

The product of its digits is 48, while the sum is 12.

The square root of 223221 is about 472.4626969402. The cubic root of 223221 is about 60.6612957985.

Adding to 223221 its reverse (122322), we get a palindrome (345543).

It can be divided in two parts, 223 and 221, that added together give a palindrome (444).

The spelling of 223221 in words is "two hundred twenty-three thousand, two hundred twenty-one", and thus it is an iban number.