12084344021 has 4 divisors (see below), whose sum is σ = 12084590700. Its totient is φ = 12084097344.

The previous prime is 12084344017. The next prime is 12084344029. The reversal of 12084344021 is 12044348021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3979843396 + 8104500625 = 63086^2 + 90025^2 .

It is a cyclic number.

It is not a de Polignac number, because 12084344021 - 2² = 12084344017 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 (12084344029) 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, 22226 + ... + 157043.

It is an arithmetic number, because the mean of its divisors is an integer number (3021147675).

Almost surely, 2^12084344021 is an apocalyptic number.

It is an amenable number.

12084344021 is a deficient number, since it is larger than the sum of its proper divisors (246679).

12084344021 is an equidigital number, since it uses as much as digits as its factorization.

12084344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246678.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 12084344021 in words is "twelve billion, eighty-four million, three hundred forty-four thousand, twenty-one".