320345020121 has 8 divisors (see below), whose sum is σ = 387644394240. Its totient is φ = 258429595968.

The previous prime is 320345020097. The next prime is 320345020133. The reversal of 320345020121 is 121020543023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320345020121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320345020621) 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, 1345987361 + ... + 1345987598.

It is an arithmetic number, because the mean of its divisors is an integer number (48455549280).

Almost surely, 2^320345020121 is an apocalyptic number.

It is an amenable number.

320345020121 is a deficient number, since it is larger than the sum of its proper divisors (67299374119).

320345020121 is a wasteful number, since it uses less digits than its factorization.

320345020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691974983.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 320345020121 its reverse (121020543023), we get a palindrome (441365563144).

The spelling of 320345020121 in words is "three hundred twenty billion, three hundred forty-five million, twenty thousand, one hundred twenty-one".