20002012210109 has 4 divisors (see below), whose sum is σ = 20003516473404. Its totient is φ = 20000507946816.

The previous prime is 20002012210099. The next prime is 20002012210139. The reversal of 20002012210109 is 90101221020002.

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 2 ways, for example, as 2539392041209 + 17462620168900 = 1593547^2 + 4178830^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002012210109 - 2¹⁶ = 20002012144573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002012210139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752111702 + ... + 752138295.

It is an arithmetic number, because the mean of its divisors is an integer number (5000879118351).

Almost surely, 2^{20002012210109} is an apocalyptic number.

It is an amenable number.

20002012210109 is a deficient number, since it is larger than the sum of its proper divisors (1504263295).

20002012210109 is a wasteful number, since it uses less digits than its factorization.

20002012210109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504263294.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 20002012210109 in words is "twenty trillion, two billion, twelve million, two hundred ten thousand, one hundred nine".