1223321231273 has 2 divisors, whose sum is σ = 1223321231274. Its totient is φ = 1223321231272.

The previous prime is 1223321231269. The next prime is 1223321231393. The reversal of 1223321231273 is 3721321233221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192053443344 + 31267787929 = 1091812^2 + 176827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223321231273 - 2² = 1223321231269 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223321231233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611660615636 + 611660615637.

It is an arithmetic number, because the mean of its divisors is an integer number (611660615637).

Almost surely, 2^{1223321231273} is an apocalyptic number.

It is an amenable number.

1223321231273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223321231273 is an equidigital number, since it uses as much as digits as its factorization.

1223321231273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

Adding to 1223321231273 its reverse (3721321233221), we get a palindrome (4944642464494).

The spelling of 1223321231273 in words is "one trillion, two hundred twenty-three billion, three hundred twenty-one million, two hundred thirty-one thousand, two hundred seventy-three".