1223333456789 has 2 divisors, whose sum is σ = 1223333456790. Its totient is φ = 1223333456788.

The previous prime is 1223333456773. The next prime is 1223333456801. The reversal of 1223333456789 is 9876543333221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1205549100625 + 17784356164 = 1097975^2 + 133358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223333456789 - 2⁴ = 1223333456773 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223333456759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611666728394 + 611666728395.

It is an arithmetic number, because the mean of its divisors is an integer number (611666728395).

Almost surely, 2^{1223333456789} is an apocalyptic number.

It is an amenable number.

1223333456789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223333456789 is an equidigital number, since it uses as much as digits as its factorization.

1223333456789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 56.

The spelling of 1223333456789 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-three million, four hundred fifty-six thousand, seven hundred eighty-nine".