12230556917 has 2 divisors, whose sum is σ = 12230556918. Its totient is φ = 12230556916.

The previous prime is 12230556911. The next prime is 12230556929. The reversal of 12230556917 is 71965503221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8545338481 + 3685218436 = 92441^2 + 60706^2 .

It is an emirp because it is prime and its reverse (71965503221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12230556917 - 2⁴ = 12230556901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12230556911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115278458 + 6115278459.

It is an arithmetic number, because the mean of its divisors is an integer number (6115278459).

Almost surely, 2^12230556917 is an apocalyptic number.

It is an amenable number.

12230556917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12230556917 is an equidigital number, since it uses as much as digits as its factorization.

12230556917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 12230556917 in words is "twelve billion, two hundred thirty million, five hundred fifty-six thousand, nine hundred seventeen".