12004011 has 16 divisors (see below), whose sum is σ = 17857920. Its totient is φ = 7969320.

The previous prime is 12003997. The next prime is 12004033. The reversal of 12004011 is 11040021.

It is a happy number.

12004011 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12004011 - 2¹¹ = 12001963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12003984 and 12004002.

It is not an unprimeable number, because it can be changed into a prime (12004051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6856 + ... + 8426.

It is an arithmetic number, because the mean of its divisors is an integer number (1116120).

Almost surely, 2^12004011 is an apocalyptic number.

12004011 is a deficient number, since it is larger than the sum of its proper divisors (5853909).

12004011 is a wasteful number, since it uses less digits than its factorization.

12004011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12004011 is about 3464.6805047508. The cubic root of 12004011 is about 228.9683537182.

Adding to 12004011 its reverse (11040021), we get a palindrome (23044032).

The spelling of 12004011 in words is "twelve million, four thousand, eleven".