322211221 has 8 divisors (see below), whose sum is σ = 329427000. Its totient is φ = 315037632.

The previous prime is 322211191. The next prime is 322211231. The reversal of 322211221 is 122112223.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67010596 + 255200625 = 8186^2 + 15975^2 .

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 322211221 - 2¹⁷ = 322080149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322211195 and 322211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322211231) 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, 5155 + ... + 25903.

It is an arithmetic number, because the mean of its divisors is an integer number (41178375).

Almost surely, 2^322211221 is an apocalyptic number.

It is an amenable number.

322211221 is a deficient number, since it is larger than the sum of its proper divisors (7215779).

322211221 is a wasteful number, since it uses less digits than its factorization.

322211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21095.

The product of its digits is 96, while the sum is 16.

The square root of 322211221 is about 17950.2429231473. The cubic root of 322211221 is about 685.5622364655.

Adding to 322211221 its reverse (122112223), we get a palindrome (444323444).

The spelling of 322211221 in words is "three hundred twenty-two million, two hundred eleven thousand, two hundred twenty-one".