12103752109 has 6 divisors (see below), whose sum is σ = 12148987370. Its totient is φ = 12058684656.

The previous prime is 12103752071. The next prime is 12103752113. The reversal of 12103752109 is 90125730121.

12103752109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 86769225 + 12016982884 = 9315^2 + 109622^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12103752109 is a prime.

It is a super-2 number, since 2×12103752109² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103755109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11274 + ... + 155995.

Almost surely, 2^12103752109 is an apocalyptic number.

It is an amenable number.

12103752109 is a deficient number, since it is larger than the sum of its proper divisors (45235261).

12103752109 is an frugal number, since it uses more digits than its factorization.

12103752109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167807 (or 167538 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The spelling of 12103752109 in words is "twelve billion, one hundred three million, seven hundred fifty-two thousand, one hundred nine".