12044021 has 4 divisors (see below), whose sum is σ = 13138944. Its totient is φ = 10949100.

The previous prime is 12043979. The next prime is 12044029.

12044021 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12044021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12043987 and 12044005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12044029) 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, 547445 + ... + 547466.

It is an arithmetic number, because the mean of its divisors is an integer number (3284736).

Almost surely, 2^12044021 is an apocalyptic number.

12044021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12044021 is a deficient number, since it is larger than the sum of its proper divisors (1094923).

12044021 is a wasteful number, since it uses less digits than its factorization.

12044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094922.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12044021 is about 3470.4496826780. The cubic root of 12044021 is about 229.2224594661. Note that the first 3 decimals are identical.

It can be divided in two parts, 1204 and 4021, that added together give a palindrome (5225).

The spelling of 12044021 in words is "twelve million, forty-four thousand, twenty-one".