322145120321 has 4 divisors (see below), whose sum is σ = 322341911892. Its totient is φ = 321948328752.

The previous prime is 322145120309. The next prime is 322145120393. The reversal of 322145120321 is 123021541223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123021541223 = 7 ⋅17574505889.

It can be written as a sum of positive squares in 2 ways, for example, as 4540738225 + 317604382096 = 67385^2 + 563564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322145120321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322145110321) 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 3 ways as a sum of consecutive naturals, for example, 98393330 + ... + 98396603.

It is an arithmetic number, because the mean of its divisors is an integer number (80585477973).

Almost surely, 2^322145120321 is an apocalyptic number.

It is an amenable number.

322145120321 is a deficient number, since it is larger than the sum of its proper divisors (196791571).

322145120321 is a wasteful number, since it uses less digits than its factorization.

322145120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196791570.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 322145120321 its reverse (123021541223), we get a palindrome (445166661544).

The spelling of 322145120321 in words is "three hundred twenty-two billion, one hundred forty-five million, one hundred twenty thousand, three hundred twenty-one".