442221122243 has 8 divisors (see below), whose sum is σ = 443218478688. Its totient is φ = 441223896384.

The previous prime is 442221122237. The next prime is 442221122257. The reversal of 442221122243 is 342221122244.

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 442221122243 - 2⁸ = 442221121987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442221122543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10624130 + ... + 10665672.

It is an arithmetic number, because the mean of its divisors is an integer number (55402309836).

Almost surely, 2^442221122243 is an apocalyptic number.

442221122243 is a deficient number, since it is larger than the sum of its proper divisors (997356445).

442221122243 is a wasteful number, since it uses less digits than its factorization.

442221122243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65293.

The product of its digits is 12288, while the sum is 29.

Adding to 442221122243 its reverse (342221122244), we get a palindrome (784442244487).

Subtracting from 442221122243 its reverse (342221122244), we obtain a palindrome (99999999999).

The spelling of 442221122243 in words is "four hundred forty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred forty-three".