12014320421 has 4 divisors (see below), whose sum is σ = 12022489344. Its totient is φ = 12006151500.

The previous prime is 12014320403. The next prime is 12014320459. The reversal of 12014320421 is 12402341021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12402341021 = 7 ⋅1771763003.

It is a cyclic number.

It is not a de Polignac number, because 12014320421 - 2¹⁰ = 12014319397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12014320393 and 12014320402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12014320471) 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 3 ways as a sum of consecutive naturals, for example, 4082255 + ... + 4085196.

It is an arithmetic number, because the mean of its divisors is an integer number (3005622336).

Almost surely, 2^12014320421 is an apocalyptic number.

It is an amenable number.

12014320421 is a deficient number, since it is larger than the sum of its proper divisors (8168923).

12014320421 is an equidigital number, since it uses as much as digits as its factorization.

12014320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8168922.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12014320421 its reverse (12402341021), we get a palindrome (24416661442).

The spelling of 12014320421 in words is "twelve billion, fourteen million, three hundred twenty thousand, four hundred twenty-one".