12231538557089 has 2 divisors, whose sum is σ = 12231538557090. Its totient is φ = 12231538557088.

The previous prime is 12231538557013. The next prime is 12231538557097. The reversal of 12231538557089 is 98075583513221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9972806100625 + 2258732456464 = 3157975^2 + 1502908^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231538557089 - 2³⁶ = 12162819080353 is a prime.

It is a super-2 number, since 2×12231538557089² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12231538517089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115769278544 + 6115769278545.

It is an arithmetic number, because the mean of its divisors is an integer number (6115769278545).

Almost surely, 2^{12231538557089} is an apocalyptic number.

It is an amenable number.

12231538557089 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231538557089 is an equidigital number, since it uses as much as digits as its factorization.

12231538557089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144000, while the sum is 59.

The spelling of 12231538557089 in words is "twelve trillion, two hundred thirty-one billion, five hundred thirty-eight million, five hundred fifty-seven thousand, eighty-nine".