12100122257 has 2 divisors, whose sum is σ = 12100122258. Its totient is φ = 12100122256.

The previous prime is 12100122239. The next prime is 12100122269. The reversal of 12100122257 is 75222100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6348264976 + 5751857281 = 79676^2 + 75841^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100122257 - 2¹² = 12100118161 is a prime.

It is not a weakly prime, because it can be changed into another prime (12100182257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050061128 + 6050061129.

It is an arithmetic number, because the mean of its divisors is an integer number (6050061129).

Almost surely, 2^12100122257 is an apocalyptic number.

It is an amenable number.

12100122257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100122257 is an equidigital number, since it uses as much as digits as its factorization.

12100122257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 12100122257 its reverse (75222100121), we get a palindrome (87322222378).

The spelling of 12100122257 in words is "twelve billion, one hundred million, one hundred twenty-two thousand, two hundred fifty-seven".