12100617161 has 2 divisors, whose sum is σ = 12100617162. Its totient is φ = 12100617160.

The previous prime is 12100617121. The next prime is 12100617197. The reversal of 12100617161 is 16171600121.

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., 9801990025 + 2298627136 = 99005^2 + 47944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100617161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100617161.

It is not a weakly prime, because it can be changed into another prime (12100617121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050308580 + 6050308581.

It is an arithmetic number, because the mean of its divisors is an integer number (6050308581).

Almost surely, 2^12100617161 is an apocalyptic number.

It is an amenable number.

12100617161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100617161 is an equidigital number, since it uses as much as digits as its factorization.

12100617161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 12100617161 in words is "twelve billion, one hundred million, six hundred seventeen thousand, one hundred sixty-one".