12001301421 has 4 divisors (see below), whose sum is σ = 16001735232. Its totient is φ = 8000867612.

The previous prime is 12001301407. The next prime is 12001301423. The reversal of 12001301421 is 12410310021.

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 12001301421 - 2⁶ = 12001301357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12001301421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001301423) 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, 2000216901 + ... + 2000216906.

It is an arithmetic number, because the mean of its divisors is an integer number (4000433808).

Almost surely, 2^12001301421 is an apocalyptic number.

It is an amenable number.

12001301421 is a deficient number, since it is larger than the sum of its proper divisors (4000433811).

12001301421 is an equidigital number, since it uses as much as digits as its factorization.

12001301421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000433810.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12001301421 its reverse (12410310021), we get a palindrome (24411611442).

The spelling of 12001301421 in words is "twelve billion, one million, three hundred one thousand, four hundred twenty-one".