221134241 has 2 divisors, whose sum is σ = 221134242. Its totient is φ = 221134240.

The previous prime is 221134223. The next prime is 221134247. The reversal of 221134241 is 142431122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192404641 + 28729600 = 13871^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 221134241 - 2¹⁴ = 221117857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221134247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110567120 + 110567121.

It is an arithmetic number, because the mean of its divisors is an integer number (110567121).

Almost surely, 2^221134241 is an apocalyptic number.

It is an amenable number.

221134241 is a deficient number, since it is larger than the sum of its proper divisors (1).

221134241 is an equidigital number, since it uses as much as digits as its factorization.

221134241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

The square root of 221134241 is about 14870.5830753202. The cubic root of 221134241 is about 604.7167501349.

Adding to 221134241 its reverse (142431122), we get a palindrome (363565363).

The spelling of 221134241 in words is "two hundred twenty-one million, one hundred thirty-four thousand, two hundred forty-one".