1001200020002 has 64 divisors (see below), whose sum is σ = 1886738241024. Its totient is φ = 387912983040.

The previous prime is 1001200019887. The next prime is 1001200020011. The reversal of 1001200020002 is 2000200021001.

1001200020002 is a modest number, since divided by 20002 gives 10012 as remainder.

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, 2393243 + ... + 2780289.

It is an arithmetic number, because the mean of its divisors is an integer number (29480285016).

Almost surely, 2^{1001200020002} is an apocalyptic number.

1001200020002 is a deficient number, since it is larger than the sum of its proper divisors (885538221022).

1001200020002 is a wasteful number, since it uses less digits than its factorization.

1001200020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387363.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 1001200020002 its reverse (2000200021001), we get a palindrome (3001400041003).

Subtracting 1001200020002 from its reverse (2000200021001), we obtain a palindrome (999000000999).

It can be divided in two parts, 1001 and 200020002, that multiplied together give a palindrome (200220022002).

The spelling of 1001200020002 in words is "one trillion, one billion, two hundred million, twenty thousand, two".