20001200220209 has 24 divisors (see below), whose sum is σ = 21709953935712. Its totient is φ = 18418458240000.

The previous prime is 20001200220203. The next prime is 20001200220247. The reversal of 20001200220209 is 90202200210002.

It is not a de Polignac number, because 20001200220209 - 2²⁰ = 20001199171633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20001200220203) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 761908334 + ... + 761934584.

It is an arithmetic number, because the mean of its divisors is an integer number (904581413988).

Almost surely, 2^{20001200220209} is an apocalyptic number.

It is an amenable number.

20001200220209 is a deficient number, since it is larger than the sum of its proper divisors (1708753715503).

20001200220209 is a wasteful number, since it uses less digits than its factorization.

20001200220209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36897 (or 36884 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 20001200220209 in words is "twenty trillion, one billion, two hundred million, two hundred twenty thousand, two hundred nine".