321322322221 has 4 divisors (see below), whose sum is σ = 321432103872. Its totient is φ = 321212540572.

The previous prime is 321322322201. The next prime is 321322322261. The reversal of 321322322221 is 122223223123.

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 321322322221 - 2⁹ = 321322321709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321322322201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54886435 + ... + 54892288.

It is an arithmetic number, because the mean of its divisors is an integer number (80358025968).

Almost surely, 2^321322322221 is an apocalyptic number.

It is an amenable number.

321322322221 is a deficient number, since it is larger than the sum of its proper divisors (109781651).

321322322221 is a wasteful number, since it uses less digits than its factorization.

321322322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109781650.

The product of its digits is 3456, while the sum is 25.

Adding to 321322322221 its reverse (122223223123), we get a palindrome (443545545344).

The spelling of 321322322221 in words is "three hundred twenty-one billion, three hundred twenty-two million, three hundred twenty-two thousand, two hundred twenty-one".