221466305113 has 2 divisors, whose sum is σ = 221466305114. Its totient is φ = 221466305112.

The previous prime is 221466305111. The next prime is 221466305117. The reversal of 221466305113 is 311503664122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171385236169 + 50081068944 = 413987^2 + 223788^2 .

It is a cyclic number.

It is not a de Polignac number, because 221466305113 - 2¹ = 221466305111 is a prime.

Together with 221466305111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (221466305111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110733152556 + 110733152557.

It is an arithmetic number, because the mean of its divisors is an integer number (110733152557).

Almost surely, 2^221466305113 is an apocalyptic number.

It is an amenable number.

221466305113 is a deficient number, since it is larger than the sum of its proper divisors (1).

221466305113 is an equidigital number, since it uses as much as digits as its factorization.

221466305113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 221466305113 its reverse (311503664122), we get a palindrome (532969969235).

The spelling of 221466305113 in words is "two hundred twenty-one billion, four hundred sixty-six million, three hundred five thousand, one hundred thirteen".