12004321123 has 4 divisors (see below), whose sum is σ = 12004674160. Its totient is φ = 12003968088.

The previous prime is 12004321111. The next prime is 12004321127. The reversal of 12004321123 is 32112340021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12004321123 - 2⁹ = 12004320611 is a prime.

It is a super-3 number, since 3×12004321123³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12004321123.

It is not an unprimeable number, because it can be changed into a prime (12004321127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119340 + ... + 195577.

It is an arithmetic number, because the mean of its divisors is an integer number (3001168540).

Almost surely, 2^12004321123 is an apocalyptic number.

12004321123 is a deficient number, since it is larger than the sum of its proper divisors (353037).

12004321123 is an equidigital number, since it uses as much as digits as its factorization.

12004321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353036.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12004321123 its reverse (32112340021), we get a palindrome (44116661144).

The spelling of 12004321123 in words is "twelve billion, four million, three hundred twenty-one thousand, one hundred twenty-three".