221334241 has 4 divisors (see below), whose sum is σ = 221386500. Its totient is φ = 221281984.

The previous prime is 221334209. The next prime is 221334257. The reversal of 221334241 is 142433122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179667216 + 41667025 = 13404^2 + 6455^2 .

It is a cyclic number.

It is not a de Polignac number, because 221334241 - 2⁵ = 221334209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221334341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19156 + ... + 28453.

It is an arithmetic number, because the mean of its divisors is an integer number (55346625).

Almost surely, 2^221334241 is an apocalyptic number.

It is an amenable number.

221334241 is a deficient number, since it is larger than the sum of its proper divisors (52259).

221334241 is an equidigital number, since it uses as much as digits as its factorization.

221334241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52258.

The product of its digits is 1152, while the sum is 22.

The square root of 221334241 is about 14877.3062413866. The cubic root of 221334241 is about 604.8990027887.

Adding to 221334241 its reverse (142433122), we get a palindrome (363767363).

The spelling of 221334241 in words is "two hundred twenty-one million, three hundred thirty-four thousand, two hundred forty-one".