11321242205437 has 2 divisors, whose sum is σ = 11321242205438. Its totient is φ = 11321242205436.

The previous prime is 11321242205363. The next prime is 11321242205443. The reversal of 11321242205437 is 73450224212311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10027520223876 + 1293721981561 = 3166626^2 + 1137419^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321242205437 - 2¹¹ = 11321242203389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11321242205396 and 11321242205405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321242205237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660621102718 + 5660621102719.

It is an arithmetic number, because the mean of its divisors is an integer number (5660621102719).

Almost surely, 2^{11321242205437} is an apocalyptic number.

It is an amenable number.

11321242205437 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321242205437 is an equidigital number, since it uses as much as digits as its factorization.

11321242205437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 11321242205437 its reverse (73450224212311), we get a palindrome (84771466417748).

The spelling of 11321242205437 in words is "eleven trillion, three hundred twenty-one billion, two hundred forty-two million, two hundred five thousand, four hundred thirty-seven".