1223304221 has 2 divisors, whose sum is σ = 1223304222. Its totient is φ = 1223304220.

The previous prime is 1223304211. The next prime is 1223304233. The reversal of 1223304221 is 1224033221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206172900 + 17131321 = 34730^2 + 4139^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223304221 - 2¹⁴ = 1223287837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223304193 and 1223304202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223304211) 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 as a sum of consecutive naturals, namely, 611652110 + 611652111.

It is an arithmetic number, because the mean of its divisors is an integer number (611652111).

Almost surely, 2^1223304221 is an apocalyptic number.

It is an amenable number.

1223304221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223304221 is an equidigital number, since it uses as much as digits as its factorization.

1223304221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223304221 is about 34975.7661960392. The cubic root of 1223304221 is about 1069.4935213261.

Adding to 1223304221 its reverse (1224033221), we get a palindrome (2447337442).

Subtracting 1223304221 from its reverse (1224033221), we obtain a cube (729000 = 90³).

The spelling of 1223304221 in words is "one billion, two hundred twenty-three million, three hundred four thousand, two hundred twenty-one".