13122451223249 has 2 divisors, whose sum is σ = 13122451223250. Its totient is φ = 13122451223248.

The previous prime is 13122451223243. The next prime is 13122451223293. The reversal of 13122451223249 is 94232215422131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6927255553024 + 6195195670225 = 2631968^2 + 2489015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122451223249 is a prime.

It is a super-2 number, since 2×13122451223249² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13122451223243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561225611624 + 6561225611625.

It is an arithmetic number, because the mean of its divisors is an integer number (6561225611625).

Almost surely, 2^{13122451223249} is an apocalyptic number.

It is an amenable number.

13122451223249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122451223249 is an equidigital number, since it uses as much as digits as its factorization.

13122451223249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The spelling of 13122451223249 in words is "thirteen trillion, one hundred twenty-two billion, four hundred fifty-one million, two hundred twenty-three thousand, two hundred forty-nine".