12115140209 has 8 divisors (see below), whose sum is σ = 12186370560. Its totient is φ = 12044061216.

The previous prime is 12115140179. The next prime is 12115140211. The reversal of 12115140209 is 90204151121.

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 12115140209 - 2¹² = 12115136113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12115170209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124757 + ... + 199485.

It is an arithmetic number, because the mean of its divisors is an integer number (1523296320).

Almost surely, 2^12115140209 is an apocalyptic number.

It is an amenable number.

12115140209 is a deficient number, since it is larger than the sum of its proper divisors (71230351).

12115140209 is an equidigital number, since it uses as much as digits as its factorization.

12115140209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75679.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 12115140209 in words is "twelve billion, one hundred fifteen million, one hundred forty thousand, two hundred nine".