12212022257 has 2 divisors, whose sum is σ = 12212022258. Its totient is φ = 12212022256.

The previous prime is 12212022203. The next prime is 12212022259. The reversal of 12212022257 is 75222021221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12197877136 + 14145121 = 110444^2 + 3761^2 .

It is an emirp because it is prime and its reverse (75222021221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212022257 - 2⁸ = 12212022001 is a prime.

Together with 12212022259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12212022259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106011128 + 6106011129.

It is an arithmetic number, because the mean of its divisors is an integer number (6106011129).

Almost surely, 2^12212022257 is an apocalyptic number.

It is an amenable number.

12212022257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212022257 is an equidigital number, since it uses as much as digits as its factorization.

12212022257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 12212022257 its reverse (75222021221), we get a palindrome (87434043478).

The spelling of 12212022257 in words is "twelve billion, two hundred twelve million, twenty-two thousand, two hundred fifty-seven".