12043021 has 8 divisors (see below), whose sum is σ = 12968640. Its totient is φ = 11141568.

The previous prime is 12043001. The next prime is 12043027. The reversal of 12043021 is 12034021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12043021 - 2⁷ = 12042893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12042992 and 12043010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5001 + ... + 7006.

It is an arithmetic number, because the mean of its divisors is an integer number (1621080).

Almost surely, 2^12043021 is an apocalyptic number.

It is an amenable number.

12043021 is a deficient number, since it is larger than the sum of its proper divisors (925619).

12043021 is a wasteful number, since it uses less digits than its factorization.

12043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12083.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12043021 is about 3470.3056061390. The cubic root of 12043021 is about 229.2161152725.

Adding to 12043021 its reverse (12034021), we get a palindrome (24077042).

It can be divided in two parts, 1204 and 3021, that added together give a square (4225 = 65²).

The spelling of 12043021 in words is "twelve million, forty-three thousand, twenty-one".