443121134113421 has 8 divisors (see below), whose sum is σ = 457418335922688. Its totient is φ = 428824118034000.

The previous prime is 443121134113393. The next prime is 443121134113439. The reversal of 443121134113421 is 124311431121344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-443121134113421 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 (443121134116421) 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, 41575745 + ... + 51134966.

It is an arithmetic number, because the mean of its divisors is an integer number (57177291990336).

Almost surely, 2^{443121134113421} is an apocalyptic number.

It is an amenable number.

443121134113421 is a deficient number, since it is larger than the sum of its proper divisors (14297201809267).

443121134113421 is a wasteful number, since it uses less digits than its factorization.

443121134113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92864923.

The product of its digits is 27648, while the sum is 35.

Adding to 443121134113421 its reverse (124311431121344), we get a palindrome (567432565234765).

The spelling of 443121134113421 in words is "four hundred forty-three trillion, one hundred twenty-one billion, one hundred thirty-four million, one hundred thirteen thousand, four hundred twenty-one".