12012012123 has 8 divisors (see below), whose sum is σ = 16019478336. Its totient is φ = 8006277000.

The previous prime is 12012012083. The next prime is 12012012151. The reversal of 12012012123 is 32121021021.

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

It is not a de Polignac number, because 12012012123 - 2⁹ = 12012011611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012012163) 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, 416493 + ... + 444398.

It is an arithmetic number, because the mean of its divisors is an integer number (2002434792).

Almost surely, 2^12012012123 is an apocalyptic number.

12012012123 is a deficient number, since it is larger than the sum of its proper divisors (4007466213).

12012012123 is an equidigital number, since it uses as much as digits as its factorization.

12012012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865545.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12012012123 its reverse (32121021021), we get a palindrome (44133033144).

The spelling of 12012012123 in words is "twelve billion, twelve million, twelve thousand, one hundred twenty-three".