240252111115321 has 2 divisors, whose sum is σ = 240252111115322. Its totient is φ = 240252111115320.

The previous prime is 240252111115301. The next prime is 240252111115337. The reversal of 240252111115321 is 123511111252042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202136168851600 + 38115942263721 = 14217460^2 + 6173811^2 .

It is a cyclic number.

It is not a de Polignac number, because 240252111115321 - 2¹⁹ = 240252110591033 is a prime.

It is not a weakly prime, because it can be changed into another prime (240252111115301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120126055557660 + 120126055557661.

It is an arithmetic number, because the mean of its divisors is an integer number (120126055557661).

Almost surely, 2^{240252111115321} is an apocalyptic number.

It is an amenable number.

240252111115321 is a deficient number, since it is larger than the sum of its proper divisors (1).

240252111115321 is an equidigital number, since it uses as much as digits as its factorization.

240252111115321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 240252111115321 its reverse (123511111252042), we get a palindrome (363763222367363).

The spelling of 240252111115321 in words is "two hundred forty trillion, two hundred fifty-two billion, one hundred eleven million, one hundred fifteen thousand, three hundred twenty-one".