221524243343113 has 2 divisors, whose sum is σ = 221524243343114. Its totient is φ = 221524243343112.

The previous prime is 221524243343093. The next prime is 221524243343167. The reversal of 221524243343113 is 311343342425122.

221524243343113 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., 217379549977209 + 4144693365904 = 14743797^2 + 2035852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221524243343113 is a prime.

It is not a weakly prime, because it can be changed into another prime (221524243323113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110762121671556 + 110762121671557.

It is an arithmetic number, because the mean of its divisors is an integer number (110762121671557).

Almost surely, 2^{221524243343113} is an apocalyptic number.

It is an amenable number.

221524243343113 is a deficient number, since it is larger than the sum of its proper divisors (1).

221524243343113 is an equidigital number, since it uses as much as digits as its factorization.

221524243343113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 40.

Adding to 221524243343113 its reverse (311343342425122), we get a palindrome (532867585768235).

The spelling of 221524243343113 in words is "two hundred twenty-one trillion, five hundred twenty-four billion, two hundred forty-three million, three hundred forty-three thousand, one hundred thirteen".