221340244343 has 4 divisors (see below), whose sum is σ = 221379909528. Its totient is φ = 221300579160.

The previous prime is 221340244339. The next prime is 221340244361. The reversal of 221340244343 is 343442043122.

221340244343 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.

It is a cyclic number.

It is not a de Polignac number, because 221340244343 - 2² = 221340244339 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 (221340244313) 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, 19824221 + ... + 19835382.

It is an arithmetic number, because the mean of its divisors is an integer number (55344977382).

Almost surely, 2^221340244343 is an apocalyptic number.

221340244343 is a deficient number, since it is larger than the sum of its proper divisors (39665185).

221340244343 is an equidigital number, since it uses as much as digits as its factorization.

221340244343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39665184.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 221340244343 its reverse (343442043122), we get a palindrome (564782287465).

The spelling of 221340244343 in words is "two hundred twenty-one billion, three hundred forty million, two hundred forty-four thousand, three hundred forty-three".