221041343 has 4 divisors (see below), whose sum is σ = 221414688. Its totient is φ = 220668000.

The previous prime is 221041321. The next prime is 221041357. The reversal of 221041343 is 343140122.

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-221041343 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 (221041043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185783 + ... + 186968.

It is an arithmetic number, because the mean of its divisors is an integer number (55353672).

Almost surely, 2^221041343 is an apocalyptic number.

221041343 is a deficient number, since it is larger than the sum of its proper divisors (373345).

221041343 is an equidigital number, since it uses as much as digits as its factorization.

221041343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373344.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 221041343 is about 14867.4591978589. The cubic root of 221041343 is about 604.6320582228.

Adding to 221041343 its reverse (343140122), we get a palindrome (564181465).

The spelling of 221041343 in words is "two hundred twenty-one million, forty-one thousand, three hundred forty-three".