20012112120109 has 8 divisors (see below), whose sum is σ = 20141946095040. Its totient is φ = 19882675800000.

The previous prime is 20012112120073. The next prime is 20012112120139. The reversal of 20012112120109 is 90102121121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012112120109 - 2³¹ = 20009964636461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012112120109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012112120139) 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 7 ways as a sum of consecutive naturals, for example, 99312729 + ... + 99514030.

It is an arithmetic number, because the mean of its divisors is an integer number (2517743261880).

Almost surely, 2^{20012112120109} is an apocalyptic number.

It is an amenable number.

20012112120109 is a deficient number, since it is larger than the sum of its proper divisors (129833974931).

20012112120109 is a wasteful number, since it uses less digits than its factorization.

20012112120109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198827411.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 20012112120109 in words is "twenty trillion, twelve billion, one hundred twelve million, one hundred twenty thousand, one hundred nine".