12231322232257 has 2 divisors, whose sum is σ = 12231322232258. Its totient is φ = 12231322232256.

The previous prime is 12231322232201. The next prime is 12231322232323. The reversal of 12231322232257 is 75223222313221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6808008134656 + 5423314097601 = 2609216^2 + 2328801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231322232257 is a prime.

It is a super-2 number, since 2×12231322232257² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12231322232957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115661116128 + 6115661116129.

It is an arithmetic number, because the mean of its divisors is an integer number (6115661116129).

Almost surely, 2^{12231322232257} is an apocalyptic number.

It is an amenable number.

12231322232257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231322232257 is an equidigital number, since it uses as much as digits as its factorization.

12231322232257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

Adding to 12231322232257 its reverse (75223222313221), we get a palindrome (87454544545478).

The spelling of 12231322232257 in words is "twelve trillion, two hundred thirty-one billion, three hundred twenty-two million, two hundred thirty-two thousand, two hundred fifty-seven".