221303344243 has 8 divisors (see below), whose sum is σ = 239770518768. Its totient is φ = 203441650944.

The previous prime is 221303344217. The next prime is 221303344247. The reversal of 221303344243 is 342443303122.

It is a happy number.

221303344243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-221303344243 is a prime.

It is a super-2 number, since 2×221303344243² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221303344247) 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 7 ways as a sum of consecutive naturals, for example, 151369546 + ... + 151371007.

It is an arithmetic number, because the mean of its divisors is an integer number (29971314846).

Almost surely, 2^221303344243 is an apocalyptic number.

221303344243 is a deficient number, since it is larger than the sum of its proper divisors (18467174525).

221303344243 is a wasteful number, since it uses less digits than its factorization.

221303344243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302740613.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 221303344243 its reverse (342443303122), we get a palindrome (563746647365).

The spelling of 221303344243 in words is "two hundred twenty-one billion, three hundred three million, three hundred forty-four thousand, two hundred forty-three".