1252304245321 has 2 divisors, whose sum is σ = 1252304245322. Its totient is φ = 1252304245320.

The previous prime is 1252304245259. The next prime is 1252304245327. The reversal of 1252304245321 is 1235424032521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016507568400 + 235796676921 = 1008220^2 + 485589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252304245321 - 2¹⁵ = 1252304212553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252304245327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626152122660 + 626152122661.

It is an arithmetic number, because the mean of its divisors is an integer number (626152122661).

Almost surely, 2^{1252304245321} is an apocalyptic number.

It is an amenable number.

1252304245321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252304245321 is an equidigital number, since it uses as much as digits as its factorization.

1252304245321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 1252304245321 its reverse (1235424032521), we get a palindrome (2487728277842).

The spelling of 1252304245321 in words is "one trillion, two hundred fifty-two billion, three hundred four million, two hundred forty-five thousand, three hundred twenty-one".