20012012120109 has 16 divisors (see below), whose sum is σ = 27842981500800. Its totient is φ = 12761199661056.

The previous prime is 20012012120101. The next prime is 20012012120147. The reversal of 20012012120109 is 90102121021002.

It is not a de Polignac number, because 20012012120109 - 2³ = 20012012120101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012012120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10714657 + ... + 12442985.

It is an arithmetic number, because the mean of its divisors is an integer number (1740186343800).

Almost surely, 2^{20012012120109} is an apocalyptic number.

It is an amenable number.

20012012120109 is a deficient number, since it is larger than the sum of its proper divisors (7830969380691).

20012012120109 is a wasteful number, since it uses less digits than its factorization.

20012012120109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896164.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 20012012120109 in words is "twenty trillion, twelve billion, twelve million, one hundred twenty thousand, one hundred nine".