321120200011321 has 4 divisors (see below), whose sum is σ = 321120236081232. Its totient is φ = 321120163941412.

The previous prime is 321120200011319. The next prime is 321120200011327. The reversal of 321120200011321 is 123110002021123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 321120200011321 - 2¹ = 321120200011319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321120200011327) 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, 5965650 + ... + 26035156.

It is an arithmetic number, because the mean of its divisors is an integer number (80280059020308).

Almost surely, 2^{321120200011321} is an apocalyptic number.

It is an amenable number.

321120200011321 is a deficient number, since it is larger than the sum of its proper divisors (36069911).

321120200011321 is a wasteful number, since it uses less digits than its factorization.

321120200011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36069910.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 321120200011321 its reverse (123110002021123), we get a palindrome (444230202032444).

The spelling of 321120200011321 in words is "three hundred twenty-one trillion, one hundred twenty billion, two hundred million, eleven thousand, three hundred twenty-one".