12012112200109 has 24 divisors (see below), whose sum is σ = 14458318271640. Its totient is φ = 9938852251776.

The previous prime is 12012112200103. The next prime is 12012112200131. The reversal of 12012112200109 is 90100221121021.

It can be written as a sum of positive squares in 4 ways, for example, as 729567097609 + 11282545102500 = 854147^2 + 3358950^2 .

It is not a de Polignac number, because 12012112200109 - 2²¹ = 12012110102957 is a prime.

It is a super-2 number, since 2×12012112200109² (a number of 27 digits) contains 22 as substring.

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 12012112200109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012112200103) 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 23 ways as a sum of consecutive naturals, for example, 5482939 + ... + 7354375.

It is an arithmetic number, because the mean of its divisors is an integer number (602429927985).

Almost surely, 2^{12012112200109} is an apocalyptic number.

It is an amenable number.

12012112200109 is a deficient number, since it is larger than the sum of its proper divisors (2446206071531).

12012112200109 is a wasteful number, since it uses less digits than its factorization.

12012112200109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875997 (or 1875990 counting only the distinct ones).

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

The spelling of 12012112200109 in words is "twelve trillion, twelve billion, one hundred twelve million, two hundred thousand, one hundred nine".