12126185807 has 8 divisors (see below), whose sum is σ = 12334982400. Its totient is φ = 11917498264.

The previous prime is 12126185801. The next prime is 12126185843. The reversal of 12126185807 is 70858162121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12126185807 - 2⁸ = 12126185551 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 (12126185801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215468 + ... + 265854.

It is an arithmetic number, because the mean of its divisors is an integer number (1541872800).

Almost surely, 2^12126185807 is an apocalyptic number.

12126185807 is a deficient number, since it is larger than the sum of its proper divisors (208796593).

12126185807 is an equidigital number, since it uses as much as digits as its factorization.

12126185807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54525.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 12126185807 in words is "twelve billion, one hundred twenty-six million, one hundred eighty-five thousand, eight hundred seven".