12384021145621 has 8 divisors (see below), whose sum is σ = 12403528449624. Its totient is φ = 12364514426880.

The previous prime is 12384021145603. The next prime is 12384021145667. The reversal of 12384021145621 is 12654112048321.

It can be written as a sum of positive squares in 4 ways, for example, as 2681606028721 + 9702415116900 = 1637561^2 + 3114870^2 .

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 12384021145621 - 2¹⁷ = 12384021014549 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 (12384021115621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64859125 + ... + 65049781.

It is an arithmetic number, because the mean of its divisors is an integer number (1550441056203).

Almost surely, 2^{12384021145621} is an apocalyptic number.

It is an amenable number.

12384021145621 is a deficient number, since it is larger than the sum of its proper divisors (19507304003).

12384021145621 is a wasteful number, since it uses less digits than its factorization.

12384021145621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292631.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 12384021145621 in words is "twelve trillion, three hundred eighty-four billion, twenty-one million, one hundred forty-five thousand, six hundred twenty-one".