2002013020321 has 4 divisors (see below), whose sum is σ = 2002169159872. Its totient is φ = 2001856880772.

The previous prime is 2002013020193. The next prime is 2002013020361. The reversal of 2002013020321 is 1230203102002.

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.

It is a cyclic number.

It is not a de Polignac number, because 2002013020321 - 2⁷ = 2002013020193 is a prime.

It is a super-2 number, since 2×2002013020321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002013020295 and 2002013020304.

It is not an unprimeable number, because it can be changed into a prime (2002013020361) 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, 78050541 + ... + 78076186.

It is an arithmetic number, because the mean of its divisors is an integer number (500542289968).

Almost surely, 2^{2002013020321} is an apocalyptic number.

It is an amenable number.

2002013020321 is a deficient number, since it is larger than the sum of its proper divisors (156139551).

2002013020321 is a wasteful number, since it uses less digits than its factorization.

2002013020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156139550.

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

Adding to 2002013020321 its reverse (1230203102002), we get a palindrome (3232216122323).

The spelling of 2002013020321 in words is "two trillion, two billion, thirteen million, twenty thousand, three hundred twenty-one".