221344043 has 2 divisors, whose sum is σ = 221344044. Its totient is φ = 221344042.

The previous prime is 221344031. The next prime is 221344087. The reversal of 221344043 is 340443122.

221344043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221344043 - 2¹⁰ = 221343019 is a prime.

It is not a weakly prime, because it can be changed into another prime (221340043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110672021 + 110672022.

It is an arithmetic number, because the mean of its divisors is an integer number (110672022).

Almost surely, 2^221344043 is an apocalyptic number.

221344043 is a deficient number, since it is larger than the sum of its proper divisors (1).

221344043 is an equidigital number, since it uses as much as digits as its factorization.

221344043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 221344043 is about 14877.6356656560. The cubic root of 221344043 is about 604.9079321685.

Adding to 221344043 its reverse (340443122), we get a palindrome (561787165).

The spelling of 221344043 in words is "two hundred twenty-one million, three hundred forty-four thousand, forty-three".