1223333123 has 2 divisors, whose sum is σ = 1223333124. Its totient is φ = 1223333122.

The previous prime is 1223333063. The next prime is 1223333159. The reversal of 1223333123 is 3213333221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223333123 - 2¹⁴ = 1223316739 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1223333173) 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, 611666561 + 611666562.

It is an arithmetic number, because the mean of its divisors is an integer number (611666562).

Almost surely, 2^1223333123 is an apocalyptic number.

1223333123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223333123 is an equidigital number, since it uses as much as digits as its factorization.

1223333123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 23.

The square root of 1223333123 is about 34976.1793653910. The cubic root of 1223333123 is about 1069.5019439402.

Adding to 1223333123 its reverse (3213333221), we get a palindrome (4436666344).

The spelling of 1223333123 in words is "one billion, two hundred twenty-three million, three hundred thirty-three thousand, one hundred twenty-three".