12101311361 has 2 divisors, whose sum is σ = 12101311362. Its totient is φ = 12101311360.

The previous prime is 12101311309. The next prime is 12101311367. The reversal of 12101311361 is 16311310121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11292250225 + 809061136 = 106265^2 + 28444^2 .

It is an emirp because it is prime and its reverse (16311310121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12101311361 - 2¹⁸ = 12101049217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12101311367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050655680 + 6050655681.

It is an arithmetic number, because the mean of its divisors is an integer number (6050655681).

Almost surely, 2^12101311361 is an apocalyptic number.

It is an amenable number.

12101311361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101311361 is an equidigital number, since it uses as much as digits as its factorization.

12101311361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 12101311361 its reverse (16311310121), we get a palindrome (28412621482).

The spelling of 12101311361 in words is "twelve billion, one hundred one million, three hundred eleven thousand, three hundred sixty-one".