321222113221 has 8 divisors (see below), whose sum is σ = 326488563200. Its totient is φ = 315985672080.

The previous prime is 321222113137. The next prime is 321222113287. The reversal of 321222113221 is 122311222123.

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 321222113221 - 2⁹ = 321222112709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321222113192 and 321222113201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321222113321) 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, 7480626 + ... + 7523443.

It is an arithmetic number, because the mean of its divisors is an integer number (40811070400).

Almost surely, 2^321222113221 is an apocalyptic number.

It is an amenable number.

321222113221 is a deficient number, since it is larger than the sum of its proper divisors (5266449979).

321222113221 is a wasteful number, since it uses less digits than its factorization.

321222113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15004419.

The product of its digits is 576, while the sum is 22.

Adding to 321222113221 its reverse (122311222123), we get a palindrome (443533335344).

The spelling of 321222113221 in words is "three hundred twenty-one billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred twenty-one".