321223322321 has 12 divisors (see below), whose sum is σ = 353136914676. Its totient is φ = 291974279520.

The previous prime is 321223322317. The next prime is 321223322341. The reversal of 321223322321 is 123223322123.

It can be written as a sum of positive squares in 2 ways, for example, as 172158606400 + 149064715921 = 414920^2 + 386089^2 .

It is not a de Polignac number, because 321223322321 - 2² = 321223322317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321223322341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554231 + ... + 974483.

It is an arithmetic number, because the mean of its divisors is an integer number (29428076223).

Almost surely, 2^321223322321 is an apocalyptic number.

It is an amenable number.

321223322321 is a deficient number, since it is larger than the sum of its proper divisors (31913592355).

321223322321 is a wasteful number, since it uses less digits than its factorization.

321223322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426592 (or 426581 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

Adding to 321223322321 its reverse (123223322123), we get a palindrome (444446644444).

The spelling of 321223322321 in words is "three hundred twenty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, three hundred twenty-one".