221441443357 has 2 divisors, whose sum is σ = 221441443358. Its totient is φ = 221441443356.

The previous prime is 221441443291. The next prime is 221441443361. The reversal of 221441443357 is 753344144122.

221441443357 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 can be written as a sum of positive squares in only one way, i.e., 221040082201 + 401361156 = 470149^2 + 20034^2 .

It is a cyclic number.

It is not a de Polignac number, because 221441443357 - 2⁷ = 221441443229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221441443397) 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, 110720721678 + 110720721679.

It is an arithmetic number, because the mean of its divisors is an integer number (110720721679).

Almost surely, 2^221441443357 is an apocalyptic number.

It is an amenable number.

221441443357 is a deficient number, since it is larger than the sum of its proper divisors (1).

221441443357 is an equidigital number, since it uses as much as digits as its factorization.

221441443357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 40.

Adding to 221441443357 its reverse (753344144122), we get a palindrome (974785587479).

The spelling of 221441443357 in words is "two hundred twenty-one billion, four hundred forty-one million, four hundred forty-three thousand, three hundred fifty-seven".