2001105321 has 8 divisors (see below), whose sum is σ = 2694045120. Its totient is φ = 1321117872.

The previous prime is 2001105311. The next prime is 2001105331. The reversal of 2001105321 is 1235011002.

It is an interprime number because it is at equal distance from previous prime (2001105311) and next prime (2001105331).

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

It is not a de Polignac number, because 2001105321 - 2¹⁰ = 2001104297 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001105321.

It is not an unprimeable number, because it can be changed into a prime (2001105311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3237726 + ... + 3238343.

It is an arithmetic number, because the mean of its divisors is an integer number (336755640).

Almost surely, 2^2001105321 is an apocalyptic number.

It is an amenable number.

2001105321 is a deficient number, since it is larger than the sum of its proper divisors (692939799).

2001105321 is a wasteful number, since it uses less digits than its factorization.

2001105321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476175.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 2001105321 is about 44733.7157075063. The cubic root of 2001105321 is about 1260.1531100158.

Adding to 2001105321 its reverse (1235011002), we get a palindrome (3236116323).

The spelling of 2001105321 in words is "two billion, one million, one hundred five thousand, three hundred twenty-one".