221231344043 has 2 divisors, whose sum is σ = 221231344044. Its totient is φ = 221231344042.

The previous prime is 221231344013. The next prime is 221231344057. The reversal of 221231344043 is 340443132122.

221231344043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221231344043 - 2¹⁸ = 221231081899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221231343997 and 221231344015.

It is not a weakly prime, because it can be changed into another prime (221231344003) 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 as a sum of consecutive naturals, namely, 110615672021 + 110615672022.

It is an arithmetic number, because the mean of its divisors is an integer number (110615672022).

Almost surely, 2^221231344043 is an apocalyptic number.

221231344043 is a deficient number, since it is larger than the sum of its proper divisors (1).

221231344043 is an equidigital number, since it uses as much as digits as its factorization.

221231344043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 221231344043 its reverse (340443132122), we get a palindrome (561674476165).

The spelling of 221231344043 in words is "two hundred twenty-one billion, two hundred thirty-one million, three hundred forty-four thousand, forty-three".