2001220020002 has 24 divisors (see below), whose sum is σ = 3697332068844. Its totient is φ = 807214797312.

The previous prime is 2001220019993. The next prime is 2001220020077. The reversal of 2001220020002 is 2000200221002.

It can be written as a sum of positive squares in 2 ways, for example, as 1533855003121 + 467365016881 = 1238489^2 + 683641^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 600604583 + ... + 600607914.

Almost surely, 2^{2001220020002} is an apocalyptic number.

2001220020002 is a deficient number, since it is larger than the sum of its proper divisors (1696112048842).

2001220020002 is a wasteful number, since it uses less digits than its factorization.

2001220020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201212530 (or 1201212523 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 2001220020002 its reverse (2000200221002), we get a palindrome (4001420241004).

The spelling of 2001220020002 in words is "two trillion, one billion, two hundred twenty million, twenty thousand, two".