12008123194 has 4 divisors (see below), whose sum is σ = 18012184794. Its totient is φ = 6004061596.

The previous prime is 12008123191. The next prime is 12008123221. The reversal of 12008123194 is 49132180021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11011773969 + 996349225 = 104937^2 + 31565^2 .

It is not an unprimeable number, because it can be changed into a prime (12008123191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002030797 + ... + 3002030800.

Almost surely, 2^12008123194 is an apocalyptic number.

12008123194 is a deficient number, since it is larger than the sum of its proper divisors (6004061600).

12008123194 is an equidigital number, since it uses as much as digits as its factorization.

12008123194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004061599.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 12008123194 in words is "twelve billion, eight million, one hundred twenty-three thousand, one hundred ninety-four".