13122231973 has 2 divisors, whose sum is σ = 13122231974. Its totient is φ = 13122231972.

The previous prime is 13122231961. The next prime is 13122232007. The reversal of 13122231973 is 37913222131.

13122231973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (13122232007) can be obtained adding 13122231973 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12043306564 + 1078925409 = 109742^2 + 32847^2 .

It is an emirp because it is prime and its reverse (37913222131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122231973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13122231943) 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, 6561115986 + 6561115987.

It is an arithmetic number, because the mean of its divisors is an integer number (6561115987).

Almost surely, 2^13122231973 is an apocalyptic number.

It is an amenable number.

13122231973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122231973 is an equidigital number, since it uses as much as digits as its factorization.

13122231973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The spelling of 13122231973 in words is "thirteen billion, one hundred twenty-two million, two hundred thirty-one thousand, nine hundred seventy-three".