12141242161 has 2 divisors, whose sum is σ = 12141242162. Its totient is φ = 12141242160.

The previous prime is 12141242159. The next prime is 12141242207. The reversal of 12141242161 is 16124214121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8042681761 + 4098560400 = 89681^2 + 64020^2 .

It is a cyclic number.

It is not a de Polignac number, because 12141242161 - 2¹ = 12141242159 is a prime.

It is a super-2 number, since 2×12141242161² (a number of 21 digits) contains 22 as substring.

Together with 12141242159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12141242261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6070621080 + 6070621081.

It is an arithmetic number, because the mean of its divisors is an integer number (6070621081).

Almost surely, 2^12141242161 is an apocalyptic number.

It is an amenable number.

12141242161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12141242161 is an equidigital number, since it uses as much as digits as its factorization.

12141242161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 25.

Adding to 12141242161 its reverse (16124214121), we get a palindrome (28265456282).

The spelling of 12141242161 in words is "twelve billion, one hundred forty-one million, two hundred forty-two thousand, one hundred sixty-one".