12041211121 has 2 divisors, whose sum is σ = 12041211122. Its totient is φ = 12041211120.

The previous prime is 12041211097. The next prime is 12041211179. The reversal of 12041211121 is 12111214021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10032826896 + 2008384225 = 100164^2 + 44815^2 .

It is an emirp because it is prime and its reverse (12111214021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12041211121 - 2¹¹ = 12041209073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12041211095 and 12041211104.

It is not a weakly prime, because it can be changed into another prime (12041211421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6020605560 + 6020605561.

It is an arithmetic number, because the mean of its divisors is an integer number (6020605561).

Almost surely, 2^12041211121 is an apocalyptic number.

It is an amenable number.

12041211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12041211121 is an equidigital number, since it uses as much as digits as its factorization.

12041211121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12041211121 its reverse (12111214021), we get a palindrome (24152425142).

The spelling of 12041211121 in words is "twelve billion, forty-one million, two hundred eleven thousand, one hundred twenty-one".