322212321 has 12 divisors (see below), whose sum is σ = 470027220. Its totient is φ = 212680800.

The previous prime is 322212299. The next prime is 322212353. The reversal of 322212321 is 123212223.

322212321 is a `hidden beast` number, since 322 + 21 + 2 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 236390625 + 85821696 = 15375^2 + 9264^2 .

It is not a de Polignac number, because 322212321 - 2⁹ = 322211809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 322212294 and 322212303.

It is not an unprimeable number, because it can be changed into a prime (322212361) 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 11 ways as a sum of consecutive naturals, for example, 176326 + ... + 178143.

It is an arithmetic number, because the mean of its divisors is an integer number (39168935).

Almost surely, 2^322212321 is an apocalyptic number.

It is an amenable number.

322212321 is a deficient number, since it is larger than the sum of its proper divisors (147814899).

322212321 is a wasteful number, since it uses less digits than its factorization.

322212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354576 (or 354573 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 322212321 is about 17950.2735633750. The cubic root of 322212321 is about 685.5630166138.

Adding to 322212321 its reverse (123212223), we get a palindrome (445424544).

The spelling of 322212321 in words is "three hundred twenty-two million, two hundred twelve thousand, three hundred twenty-one".