443421221121431 has 8 divisors (see below), whose sum is σ = 506855443019040. Its totient is φ = 380009082515328.

The previous prime is 443421221121427. The next prime is 443421221121443. The reversal of 443421221121431 is 134121122124344.

It is a happy number.

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

It is not a de Polignac number, because 443421221121431 - 2² = 443421221121427 is a prime.

It is a super-2 number, since 2×443421221121431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 443421221121391 and 443421221121400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443421221121401) 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, 5520779846 + ... + 5520860163.

It is an arithmetic number, because the mean of its divisors is an integer number (63356930377380).

Almost surely, 2^{443421221121431} is an apocalyptic number.

443421221121431 is a deficient number, since it is larger than the sum of its proper divisors (63434221897609).

443421221121431 is a wasteful number, since it uses less digits than its factorization.

443421221121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11041645753.

The product of its digits is 36864, while the sum is 35.

Adding to 443421221121431 its reverse (134121122124344), we get a palindrome (577542343245775).

The spelling of 443421221121431 in words is "four hundred forty-three trillion, four hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, four hundred thirty-one".