2002021305 has 32 divisors (see below), whose sum is σ = 3326721024. Its totient is φ = 1027325376.

The previous prime is 2002021289. The next prime is 2002021319. The reversal of 2002021305 is 5031202002.

It is not a de Polignac number, because 2002021305 - 2⁴ = 2002021289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 20052 + ... + 66378.

It is an arithmetic number, because the mean of its divisors is an integer number (103960032).

Almost surely, 2^2002021305 is an apocalyptic number.

It is an amenable number.

2002021305 is a deficient number, since it is larger than the sum of its proper divisors (1324699719).

2002021305 is a wasteful number, since it uses less digits than its factorization.

2002021305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46445.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2002021305 is about 44743.9527198928. The cubic root of 2002021305 is about 1260.3453544384.

Adding to 2002021305 its reverse (5031202002), we get a palindrome (7033223307).

The spelling of 2002021305 in words is "two billion, two million, twenty-one thousand, three hundred five".