12212023211257 has 2 divisors, whose sum is σ = 12212023211258. Its totient is φ = 12212023211256.

The previous prime is 12212023211209. The next prime is 12212023211291. The reversal of 12212023211257 is 75211232021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11715532457616 + 496490753641 = 3422796^2 + 704621^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212023211257 - 2²⁷ = 12211888993529 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212023211207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106011605628 + 6106011605629.

It is an arithmetic number, because the mean of its divisors is an integer number (6106011605629).

Almost surely, 2^{12212023211257} is an apocalyptic number.

It is an amenable number.

12212023211257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212023211257 is an equidigital number, since it uses as much as digits as its factorization.

12212023211257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 12212023211257 its reverse (75211232021221), we get a palindrome (87423255232478).

The spelling of 12212023211257 in words is "twelve trillion, two hundred twelve billion, twenty-three million, two hundred eleven thousand, two hundred fifty-seven".