20001002102209 has 4 divisors (see below), whose sum is σ = 20033313899440. Its totient is φ = 19968690304980.

The previous prime is 20001002102177. The next prime is 20001002102233. The reversal of 20001002102209 is 90220120010002.

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 20001002102209 - 2⁵ = 20001002102177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001002106209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16155897687 + ... + 16155898924.

It is an arithmetic number, because the mean of its divisors is an integer number (5008328474860).

Almost surely, 2^{20001002102209} is an apocalyptic number.

It is an amenable number.

20001002102209 is a deficient number, since it is larger than the sum of its proper divisors (32311797231).

20001002102209 is an equidigital number, since it uses as much as digits as its factorization.

20001002102209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32311797230.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20001002102209 in words is "twenty trillion, one billion, two million, one hundred two thousand, two hundred nine".