12344421421 has 8 divisors (see below), whose sum is σ = 12503168000. Its totient is φ = 12185737200.

The previous prime is 12344421413. The next prime is 12344421443. The reversal of 12344421421 is 12412444321.

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 12344421421 - 2³ = 12344421413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12344421421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344421451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485380 + ... + 510178.

It is an arithmetic number, because the mean of its divisors is an integer number (1562896000).

Almost surely, 2^12344421421 is an apocalyptic number.

It is an amenable number.

12344421421 is a deficient number, since it is larger than the sum of its proper divisors (158746579).

12344421421 is an equidigital number, since it uses as much as digits as its factorization.

12344421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31179.

The product of its digits is 6144, while the sum is 28.

Adding to 12344421421 its reverse (12412444321), we get a palindrome (24756865742).

The spelling of 12344421421 in words is "twelve billion, three hundred forty-four million, four hundred twenty-one thousand, four hundred twenty-one".