12000342440421 has 16 divisors (see below), whose sum is σ = 18043632638400. Its totient is φ = 7880821899984.

The previous prime is 12000342440419. The next prime is 12000342440423. The reversal of 12000342440421 is 12404424300021.

12000342440421 is a `hidden beast` number, since 1 + 200 + 0 + 34 + 2 + 4 + 4 + 0 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (12000342440419) and next prime (12000342440423).

It is not a de Polignac number, because 12000342440421 - 2¹ = 12000342440419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000342440423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3316842426 + ... + 3316846043.

It is an arithmetic number, because the mean of its divisors is an integer number (1127727039900).

Almost surely, 2^{12000342440421} is an apocalyptic number.

It is an amenable number.

12000342440421 is a deficient number, since it is larger than the sum of its proper divisors (6043290197979).

12000342440421 is an equidigital number, since it uses as much as digits as its factorization.

12000342440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633688545 (or 6633688539 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12000342440421 its reverse (12404424300021), we get a palindrome (24404766740442).

The spelling of 12000342440421 in words is "twelve trillion, three hundred forty-two million, four hundred forty thousand, four hundred twenty-one".