321130112332321 has 4 divisors (see below), whose sum is σ = 321284427621444. Its totient is φ = 320975797043200.

The previous prime is 321130112332291. The next prime is 321130112332327. The reversal of 321130112332321 is 123233211031123.

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 239105482337296 + 82024629995025 = 15463036^2 + 9056745^2 .

It is a cyclic number.

It is not a de Polignac number, because 321130112332321 - 2²³ = 321130103943713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321130112332321.

It is not an unprimeable number, because it can be changed into a prime (321130112332327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77157641440 + ... + 77157645601.

It is an arithmetic number, because the mean of its divisors is an integer number (80321106905361).

Almost surely, 2^{321130112332321} is an apocalyptic number.

It is an amenable number.

321130112332321 is a deficient number, since it is larger than the sum of its proper divisors (154315289123).

321130112332321 is a wasteful number, since it uses less digits than its factorization.

321130112332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154315289122.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 321130112332321 its reverse (123233211031123), we get a palindrome (444363323363444).

The spelling of 321130112332321 in words is "three hundred twenty-one trillion, one hundred thirty billion, one hundred twelve million, three hundred thirty-two thousand, three hundred twenty-one".