321320323102001 has 4 divisors (see below), whose sum is σ = 321331640015652. Its totient is φ = 321309006188352.

The previous prime is 321320323101997. The next prime is 321320323102019. The reversal of 321320323102001 is 100201323023123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271888736924401 + 49431586177600 = 16489049^2 + 7030760^2 .

It is a cyclic number.

It is not a de Polignac number, because 321320323102001 - 2² = 321320323101997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321320323102901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5658414236 + ... + 5658471021.

It is an arithmetic number, because the mean of its divisors is an integer number (80332910003913).

Almost surely, 2^{321320323102001} is an apocalyptic number.

It is an amenable number.

321320323102001 is a deficient number, since it is larger than the sum of its proper divisors (11316913651).

321320323102001 is a wasteful number, since it uses less digits than its factorization.

321320323102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316913650.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 321320323102001 its reverse (100201323023123), we get a palindrome (421521646125124).

The spelling of 321320323102001 in words is "three hundred twenty-one trillion, three hundred twenty billion, three hundred twenty-three million, one hundred two thousand, one".