2001322321 has 8 divisors (see below), whose sum is σ = 2025170784. Its totient is φ = 1977581760.

The previous prime is 2001322291. The next prime is 2001322363. The reversal of 2001322321 is 1232231002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001322321 - 2⁹ = 2001321809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001322295 and 2001322304.

It is not an unprimeable number, because it can be changed into a prime (2001322021) 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, 10650 + ... + 64156.

It is an arithmetic number, because the mean of its divisors is an integer number (253146348).

Almost surely, 2^2001322321 is an apocalyptic number.

It is an amenable number.

2001322321 is a deficient number, since it is larger than the sum of its proper divisors (23848463).

2001322321 is a wasteful number, since it uses less digits than its factorization.

2001322321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53951.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2001322321 is about 44736.1411053747. The cubic root of 2001322321 is about 1260.1986587330.

Adding to 2001322321 its reverse (1232231002), we get a palindrome (3233553323).

The spelling of 2001322321 in words is "two billion, one million, three hundred twenty-two thousand, three hundred twenty-one".