1000200020002 has 4 divisors (see below), whose sum is σ = 1500300030006. Its totient is φ = 500100010000.

The previous prime is 1000200019997. The next prime is 1000200020009. The reversal of 1000200020002 is 2000200020001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 973855159281 + 26344860721 = 986841^2 + 162311^2 .

1000200020002 is a modest number, since divided by 20002 gives 10002 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1000200020009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250050004999 + ... + 250050005002.

Almost surely, 2^{1000200020002} is an apocalyptic number.

1000200020002 is a deficient number, since it is larger than the sum of its proper divisors (500100010004).

1000200020002 is an equidigital number, since it uses as much as digits as its factorization.

1000200020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500100010003.

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 1000200020002 its reverse (2000200020001), we get a palindrome (3000400040003).

Subtracting 1000200020002 from its reverse (2000200020001), we obtain a palindrome (999999999999).

The spelling of 1000200020002 in words is "one trillion, two hundred million, twenty thousand, two".