12101120257 has 2 divisors, whose sum is σ = 12101120258. Its totient is φ = 12101120256.

The previous prime is 12101120231. The next prime is 12101120263. The reversal of 12101120257 is 75202110121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7234523136 + 4866597121 = 85056^2 + 69761^2 .

It is an emirp because it is prime and its reverse (75202110121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12101120257 - 2¹¹ = 12101118209 is a prime.

It is a super-2 number, since 2×12101120257² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12101120267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050560128 + 6050560129.

It is an arithmetic number, because the mean of its divisors is an integer number (6050560129).

Almost surely, 2^12101120257 is an apocalyptic number.

It is an amenable number.

12101120257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101120257 is an equidigital number, since it uses as much as digits as its factorization.

12101120257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 12101120257 its reverse (75202110121), we get a palindrome (87303230378).

The spelling of 12101120257 in words is "twelve billion, one hundred one million, one hundred twenty thousand, two hundred fifty-seven".