221343301 has 2 divisors, whose sum is σ = 221343302. Its totient is φ = 221343300.

The previous prime is 221343299. The next prime is 221343307. The reversal of 221343301 is 103343122.

221343301 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., 144360225 + 76983076 = 12015^2 + 8774^2 .

It is a cyclic number.

It is not a de Polignac number, because 221343301 - 2¹ = 221343299 is a prime.

Together with 221343299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221343307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110671650 + 110671651.

It is an arithmetic number, because the mean of its divisors is an integer number (110671651).

Almost surely, 2^221343301 is an apocalyptic number.

It is an amenable number.

221343301 is a deficient number, since it is larger than the sum of its proper divisors (1).

221343301 is an equidigital number, since it uses as much as digits as its factorization.

221343301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 221343301 is about 14877.6107288771. The cubic root of 221343301 is about 604.9072562341.

Adding to 221343301 its reverse (103343122), we get a palindrome (324686423).

The spelling of 221343301 in words is "two hundred twenty-one million, three hundred forty-three thousand, three hundred one".