221443041137 has 2 divisors, whose sum is σ = 221443041138. Its totient is φ = 221443041136.

The previous prime is 221443041089. The next prime is 221443041191. The reversal of 221443041137 is 731140344122.

221443041137 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 can be written as a sum of positive squares in only one way, i.e., 161809889536 + 59633151601 = 402256^2 + 244199^2 .

It is a cyclic number.

It is not a de Polignac number, because 221443041137 - 2⁸ = 221443040881 is a prime.

It is not a weakly prime, because it can be changed into another prime (221443041037) 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, 110721520568 + 110721520569.

It is an arithmetic number, because the mean of its divisors is an integer number (110721520569).

Almost surely, 2^221443041137 is an apocalyptic number.

It is an amenable number.

221443041137 is a deficient number, since it is larger than the sum of its proper divisors (1).

221443041137 is an equidigital number, since it uses as much as digits as its factorization.

221443041137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 221443041137 its reverse (731140344122), we get a palindrome (952583385259).

The spelling of 221443041137 in words is "two hundred twenty-one billion, four hundred forty-three million, forty-one thousand, one hundred thirty-seven".