12444622644421 has 8 divisors (see below), whose sum is σ = 13589018352000. Its totient is φ = 11302404666240.

The previous prime is 12444622644403. The next prime is 12444622644497.

12444622644421 is nontrivially palindromic in base 10.

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 12444622644421 - 2⁹ = 12444622643909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444622642421) 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, 544420396 + ... + 544443253.

It is an arithmetic number, because the mean of its divisors is an integer number (1698627294000).

Almost surely, 2^{12444622644421} is an apocalyptic number.

12444622644421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12444622644421 is a deficient number, since it is larger than the sum of its proper divisors (1144395707579).

12444622644421 is a wasteful number, since it uses less digits than its factorization.

12444622644421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088864699.

The product of its digits is 2359296, while the sum is 46.

It can be divided in two parts, 1244462 and 2644421, that added together give a palindrome (3888883).

The spelling of 12444622644421 in words is "twelve trillion, four hundred forty-four billion, six hundred twenty-two million, six hundred forty-four thousand, four hundred twenty-one".