12040330421 has 36 divisors (see below), whose sum is σ = 14954571072. Its totient is φ = 9660564144.

The previous prime is 12040330417. The next prime is 12040330451. The reversal of 12040330421 is 12403304021.

It is not a de Polignac number, because 12040330421 - 2² = 12040330417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12040330393 and 12040330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040330451) 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 35 ways as a sum of consecutive naturals, for example, 1213346 + ... + 1223228.

It is an arithmetic number, because the mean of its divisors is an integer number (415404752).

Almost surely, 2^12040330421 is an apocalyptic number.

It is an amenable number.

12040330421 is a deficient number, since it is larger than the sum of its proper divisors (2914240651).

12040330421 is an equidigital number, since it uses as much as digits as its factorization.

12040330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990 (or 9960 counting only the distinct ones).

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

Adding to 12040330421 its reverse (12403304021), we get a palindrome (24443634442).

The spelling of 12040330421 in words is "twelve billion, forty million, three hundred thirty thousand, four hundred twenty-one".