13331121247 has 2 divisors, whose sum is σ = 13331121248. Its totient is φ = 13331121246.

The previous prime is 13331121163. The next prime is 13331121269. The reversal of 13331121247 is 74212113331.

13331121247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (74212113331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13331121247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13331121347) 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, 6665560623 + 6665560624.

It is an arithmetic number, because the mean of its divisors is an integer number (6665560624).

Almost surely, 2^13331121247 is an apocalyptic number.

13331121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331121247 is an equidigital number, since it uses as much as digits as its factorization.

13331121247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

Adding to 13331121247 its reverse (74212113331), we get a palindrome (87543234578).

The spelling of 13331121247 in words is "thirteen billion, three hundred thirty-one million, one hundred twenty-one thousand, two hundred forty-seven".