13211203249 has 2 divisors, whose sum is σ = 13211203250. Its totient is φ = 13211203248.

The previous prime is 13211203211. The next prime is 13211203307. The reversal of 13211203249 is 94230211231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8478726400 + 4732476849 = 92080^2 + 68793^2 .

It is a cyclic number.

It is not a de Polignac number, because 13211203249 - 2⁷ = 13211203121 is a prime.

It is not a weakly prime, because it can be changed into another prime (13211203349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605601624 + 6605601625.

It is an arithmetic number, because the mean of its divisors is an integer number (6605601625).

Almost surely, 2^13211203249 is an apocalyptic number.

It is an amenable number.

13211203249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211203249 is an equidigital number, since it uses as much as digits as its factorization.

13211203249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 13211203249 in words is "thirteen billion, two hundred eleven million, two hundred three thousand, two hundred forty-nine".