12005021404 has 12 divisors (see below), whose sum is σ = 21296579584. Its totient is φ = 5920284384.

The previous prime is 12005021387. The next prime is 12005021407. The reversal of 12005021404 is 40412050021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005021407) 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, 20556252 + ... + 20556835.

Almost surely, 2^12005021404 is an apocalyptic number.

It is an amenable number.

12005021404 is a deficient number, since it is larger than the sum of its proper divisors (9291558180).

12005021404 is a wasteful number, since it uses less digits than its factorization.

12005021404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41113164 (or 41113162 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 12005021404 its reverse (40412050021), we get a palindrome (52417071425).

The spelling of 12005021404 in words is "twelve billion, five million, twenty-one thousand, four hundred four".