322012221 has 16 divisors (see below), whose sum is σ = 455182848. Its totient is φ = 202132800.

The previous prime is 322012211. The next prime is 322012241. The reversal of 322012221 is 122210223.

It is a happy number.

It is not a de Polignac number, because 322012221 - 2⁵ = 322012189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 322012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322012211) 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 15 ways as a sum of consecutive naturals, for example, 43350 + ... + 50231.

It is an arithmetic number, because the mean of its divisors is an integer number (28448928).

Almost surely, 2^322012221 is an apocalyptic number.

322012221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

322012221 is a deficient number, since it is larger than the sum of its proper divisors (133170627).

322012221 is a wasteful number, since it uses less digits than its factorization.

322012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93652.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 322012221 is about 17944.6989665472. The cubic root of 322012221 is about 685.4210713209.

Adding to 322012221 its reverse (122210223), we get a palindrome (444222444).

The spelling of 322012221 in words is "three hundred twenty-two million, twelve thousand, two hundred twenty-one".