21120112000109 has 16 divisors (see below), whose sum is σ = 22239563808000. Its totient is φ = 20001448272960.

The previous prime is 21120112000087. The next prime is 21120112000133. The reversal of 21120112000109 is 90100021102112.

It is not a de Polignac number, because 21120112000109 - 2⁸ = 21120111999853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120112000139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880689899 + ... + 880713879.

It is an arithmetic number, because the mean of its divisors is an integer number (1389972738000).

Almost surely, 2^{21120112000109} is an apocalyptic number.

It is an amenable number.

21120112000109 is a deficient number, since it is larger than the sum of its proper divisors (1119451807891).

21120112000109 is a wasteful number, since it uses less digits than its factorization.

21120112000109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38468.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 21120112000109 in words is "twenty-one trillion, one hundred twenty billion, one hundred twelve million, one hundred nine", and thus it is an aban number.