221341441 has 2 divisors, whose sum is σ = 221341442. Its totient is φ = 221341440.

The previous prime is 221341433. The next prime is 221341453. The reversal of 221341441 is 144143122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190026225 + 31315216 = 13785^2 + 5596^2 .

It is a cyclic number.

It is not a de Polignac number, because 221341441 - 2³ = 221341433 is a prime.

It is not a weakly prime, because it can be changed into another prime (221341741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110670720 + 110670721.

It is an arithmetic number, because the mean of its divisors is an integer number (110670721).

Almost surely, 2^221341441 is an apocalyptic number.

It is an amenable number.

221341441 is a deficient number, since it is larger than the sum of its proper divisors (1).

221341441 is an equidigital number, since it uses as much as digits as its factorization.

221341441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 221341441 is about 14877.5482187086. The cubic root of 221341441 is about 604.9055618365.

Adding to 221341441 its reverse (144143122), we get a palindrome (365484563).

The spelling of 221341441 in words is "two hundred twenty-one million, three hundred forty-one thousand, four hundred forty-one".