12340304021 has 8 divisors (see below), whose sum is σ = 12407444544. Its totient is φ = 12273295680.

The previous prime is 12340304017. The next prime is 12340304023. The reversal of 12340304021 is 12040304321.

12340304021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12340304021 - 2² = 12340304017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12340303984 and 12340304002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340304023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157136 + ... + 222198.

It is an arithmetic number, because the mean of its divisors is an integer number (1550930568).

Almost surely, 2^12340304021 is an apocalyptic number.

It is an amenable number.

12340304021 is a deficient number, since it is larger than the sum of its proper divisors (67140523).

12340304021 is an equidigital number, since it uses as much as digits as its factorization.

12340304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66091.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12340304021 its reverse (12040304321), we get a palindrome (24380608342).

The spelling of 12340304021 in words is "twelve billion, three hundred forty million, three hundred four thousand, twenty-one".