12104202109 has 2 divisors, whose sum is σ = 12104202110. Its totient is φ = 12104202108.

The previous prime is 12104202041. The next prime is 12104202137. The reversal of 12104202109 is 90120240121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7361125209 + 4743076900 = 85797^2 + 68870^2 .

It is an emirp because it is prime and its reverse (90120240121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12104202109 - 2⁹ = 12104201597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12104202109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12104202809) 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 as a sum of consecutive naturals, namely, 6052101054 + 6052101055.

It is an arithmetic number, because the mean of its divisors is an integer number (6052101055).

Almost surely, 2^12104202109 is an apocalyptic number.

It is an amenable number.

12104202109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12104202109 is an equidigital number, since it uses as much as digits as its factorization.

12104202109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 12104202109 in words is "twelve billion, one hundred four million, two hundred two thousand, one hundred nine".