229344221 has 2 divisors, whose sum is σ = 229344222. Its totient is φ = 229344220.

The previous prime is 229344211. The next prime is 229344223. The reversal of 229344221 is 122443922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225300100 + 4044121 = 15010^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 229344221 - 2¹⁰ = 229343197 is a prime.

Together with 229344223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229344223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114672110 + 114672111.

It is an arithmetic number, because the mean of its divisors is an integer number (114672111).

Almost surely, 2^229344221 is an apocalyptic number.

It is an amenable number.

229344221 is a deficient number, since it is larger than the sum of its proper divisors (1).

229344221 is an equidigital number, since it uses as much as digits as its factorization.

229344221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 229344221 is about 15144.1150616337. The cubic root of 229344221 is about 612.1097075386.

The spelling of 229344221 in words is "two hundred twenty-nine million, three hundred forty-four thousand, two hundred twenty-one".