221244441023 has 2 divisors, whose sum is σ = 221244441024. Its totient is φ = 221244441022.

The previous prime is 221244441007. The next prime is 221244441031. The reversal of 221244441023 is 320144442122.

It is a happy number.

221244441023 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 221244441023 - 2⁴ = 221244441007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221244441083) 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, 110622220511 + 110622220512.

It is an arithmetic number, because the mean of its divisors is an integer number (110622220512).

Almost surely, 2^221244441023 is an apocalyptic number.

221244441023 is a deficient number, since it is larger than the sum of its proper divisors (1).

221244441023 is an equidigital number, since it uses as much as digits as its factorization.

221244441023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221244441023 its reverse (320144442122), we get a palindrome (541388883145).

The spelling of 221244441023 in words is "two hundred twenty-one billion, two hundred forty-four million, four hundred forty-one thousand, twenty-three".