12004021234 has 4 divisors (see below), whose sum is σ = 18006031854. Its totient is φ = 6002010616.

The previous prime is 12004021219. The next prime is 12004021247. The reversal of 12004021234 is 43212040021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43212040021 = 20807 ⋅2076803.

It can be written as a sum of positive squares in only one way, i.e., 9299709225 + 2704312009 = 96435^2 + 52003^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3001005307 + ... + 3001005310.

Almost surely, 2^12004021234 is an apocalyptic number.

12004021234 is a deficient number, since it is larger than the sum of its proper divisors (6002010620).

12004021234 is an equidigital number, since it uses as much as digits as its factorization.

12004021234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6002010619.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12004021234 its reverse (43212040021), we get a palindrome (55216061255).

The spelling of 12004021234 in words is "twelve billion, four million, twenty-one thousand, two hundred thirty-four".