12103231311121 has 2 divisors, whose sum is σ = 12103231311122. Its totient is φ = 12103231311120.

The previous prime is 12103231311071. The next prime is 12103231311151. The reversal of 12103231311121 is 12111313230121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10784032049025 + 1319199262096 = 3283905^2 + 1148564^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103231311121 - 2⁷ = 12103231310993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12103231311092 and 12103231311101.

It is not a weakly prime, because it can be changed into another prime (12103231311151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051615655560 + 6051615655561.

It is an arithmetic number, because the mean of its divisors is an integer number (6051615655561).

Almost surely, 2^{12103231311121} is an apocalyptic number.

It is an amenable number.

12103231311121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103231311121 is an equidigital number, since it uses as much as digits as its factorization.

12103231311121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12103231311121 its reverse (12111313230121), we get a palindrome (24214544541242).

The spelling of 12103231311121 in words is "twelve trillion, one hundred three billion, two hundred thirty-one million, three hundred eleven thousand, one hundred twenty-one".