221443041343 has 4 divisors (see below), whose sum is σ = 221530260520. Its totient is φ = 221355822168.

The previous prime is 221443041311. The next prime is 221443041359. The reversal of 221443041343 is 343140344122.

221443041343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343140344122 = 2 ⋅171570172061.

It is a cyclic number.

It is not a de Polignac number, because 221443041343 - 2⁵ = 221443041311 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 (221443042343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43605780 + ... + 43610857.

It is an arithmetic number, because the mean of its divisors is an integer number (55382565130).

Almost surely, 2^221443041343 is an apocalyptic number.

221443041343 is a deficient number, since it is larger than the sum of its proper divisors (87219177).

221443041343 is an equidigital number, since it uses as much as digits as its factorization.

221443041343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87219176.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 221443041343 its reverse (343140344122), we get a palindrome (564583385465).

The spelling of 221443041343 in words is "two hundred twenty-one billion, four hundred forty-three million, forty-one thousand, three hundred forty-three".