12041824021 has 4 divisors (see below), whose sum is σ = 12069006912. Its totient is φ = 12014641132.

The previous prime is 12041824007. The next prime is 12041824027. The reversal of 12041824021 is 12042814021.

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 not a de Polignac number, because 12041824021 - 2²¹ = 12039726869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12041824027) 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, 13590781 + ... + 13591666.

It is an arithmetic number, because the mean of its divisors is an integer number (3017251728).

Almost surely, 2^12041824021 is an apocalyptic number.

It is an amenable number.

12041824021 is a deficient number, since it is larger than the sum of its proper divisors (27182891).

12041824021 is an equidigital number, since it uses as much as digits as its factorization.

12041824021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27182890.

The product of its (nonzero) digits is 1024, while the sum is 25.

The spelling of 12041824021 in words is "twelve billion, forty-one million, eight hundred twenty-four thousand, twenty-one".