12223232257 has 2 divisors, whose sum is σ = 12223232258. Its totient is φ = 12223232256.

The previous prime is 12223232179. The next prime is 12223232291. The reversal of 12223232257 is 75223232221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9731625201 + 2491607056 = 98649^2 + 49916^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223232257 - 2¹¹ = 12223230209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12223232657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111616128 + 6111616129.

It is an arithmetic number, because the mean of its divisors is an integer number (6111616129).

Almost surely, 2^12223232257 is an apocalyptic number.

It is an amenable number.

12223232257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223232257 is an equidigital number, since it uses as much as digits as its factorization.

12223232257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

Adding to 12223232257 its reverse (75223232221), we get a palindrome (87446464478).

The spelling of 12223232257 in words is "twelve billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred fifty-seven".