321222 has 32 divisors (see below), whose sum is σ = 728064. Its totient is φ = 93600.

The previous prime is 321221. The next prime is 321227. The reversal of 321222 is 222123.

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 3¹⁰ + 2² + 2³ + 1 + 2⁴ + 2¹⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 321198 and 321207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (22752).

2³²¹²²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364032).

321222 is an abundant number, since it is smaller than the sum of its proper divisors (406842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321222 is a wasteful number, since it uses less digits than its factorization.

321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204.

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

The square root of 321222 is about 566.7645013584. The cubic root of 321222 is about 68.4859935488.

Adding to 321222 its reverse (222123), we get a palindrome (543345).

Subtracting from 321222 its reverse (222123), we obtain a palindrome (99099).

The spelling of 321222 in words is "three hundred twenty-one thousand, two hundred twenty-two", and thus it is an iban number.