4442121222443 has 4 divisors (see below), whose sum is σ = 4703422470840. Its totient is φ = 4180819974048.

The previous prime is 4442121222437. The next prime is 4442121222571. The reversal of 4442121222443 is 3442221212444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442121222443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4442127222443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130650624173 + ... + 130650624206.

It is an arithmetic number, because the mean of its divisors is an integer number (1175855617710).

Almost surely, 2^{4442121222443} is an apocalyptic number.

4442121222443 is a deficient number, since it is larger than the sum of its proper divisors (261301248397).

4442121222443 is a wasteful number, since it uses less digits than its factorization.

4442121222443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261301248396.

The product of its digits is 98304, while the sum is 35.

Adding to 4442121222443 its reverse (3442221212444), we get a palindrome (7884342434887).

Subtracting from 4442121222443 its reverse (3442221212444), we obtain a palindrome (999900009999).

The spelling of 4442121222443 in words is "four trillion, four hundred forty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, four hundred forty-three".