12015222257 has 2 divisors, whose sum is σ = 12015222258. Its totient is φ = 12015222256.

The previous prime is 12015222227. The next prime is 12015222281. The reversal of 12015222257 is 75222251021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8705636416 + 3309585841 = 93304^2 + 57529^2 .

It is a cyclic number.

It is not a de Polignac number, because 12015222257 - 2⁸ = 12015222001 is a prime.

It is not a weakly prime, because it can be changed into another prime (12015222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6007611128 + 6007611129.

It is an arithmetic number, because the mean of its divisors is an integer number (6007611129).

Almost surely, 2^12015222257 is an apocalyptic number.

It is an amenable number.

12015222257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015222257 is an equidigital number, since it uses as much as digits as its factorization.

12015222257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

Adding to 12015222257 its reverse (75222251021), we get a palindrome (87237473278).

The spelling of 12015222257 in words is "twelve billion, fifteen million, two hundred twenty-two thousand, two hundred fifty-seven".