1321331252233 has 2 divisors, whose sum is σ = 1321331252234. Its totient is φ = 1321331252232.

The previous prime is 1321331252173. The next prime is 1321331252257. The reversal of 1321331252233 is 3322521331231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1058847174009 + 262484078224 = 1029003^2 + 512332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321331252233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321331252195 and 1321331252204.

It is not a weakly prime, because it can be changed into another prime (1321331252933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660665626116 + 660665626117.

It is an arithmetic number, because the mean of its divisors is an integer number (660665626117).

Almost surely, 2^{1321331252233} is an apocalyptic number.

It is an amenable number.

1321331252233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321331252233 is an equidigital number, since it uses as much as digits as its factorization.

1321331252233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

Adding to 1321331252233 its reverse (3322521331231), we get a palindrome (4643852583464).

The spelling of 1321331252233 in words is "one trillion, three hundred twenty-one billion, three hundred thirty-one million, two hundred fifty-two thousand, two hundred thirty-three".