363221 has 4 divisors (see below), whose sum is σ = 371712. Its totient is φ = 354732.

The previous prime is 363217. The next prime is 363257. The reversal of 363221 is 122363.

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 363221 - 2² = 363217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 363221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363211) 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, 4181 + ... + 4266.

It is an arithmetic number, because the mean of its divisors is an integer number (92928).

2³⁶³²²¹ is an apocalyptic number.

It is an amenable number.

363221 is a deficient number, since it is larger than the sum of its proper divisors (8491).

363221 is an equidigital number, since it uses as much as digits as its factorization.

363221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8490.

The product of its digits is 216, while the sum is 17.

The square root of 363221 is about 602.6781894179. The cubic root of 363221 is about 71.3493985613.

Adding to 363221 its reverse (122363), we get a palindrome (485584).

The spelling of 363221 in words is "three hundred sixty-three thousand, two hundred twenty-one".