12201110121121 has 2 divisors, whose sum is σ = 12201110121122. Its totient is φ = 12201110121120.

The previous prime is 12201110121107. The next prime is 12201110121143. The reversal of 12201110121121 is 12112101110221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12051832980625 + 149277140496 = 3471575^2 + 386364^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201110121121 - 2¹⁷ = 12201109990049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201110121095 and 12201110121104.

It is not a weakly prime, because it can be changed into another prime (12201110121521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100555060560 + 6100555060561.

It is an arithmetic number, because the mean of its divisors is an integer number (6100555060561).

Almost surely, 2^{12201110121121} is an apocalyptic number.

It is an amenable number.

12201110121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201110121121 is an equidigital number, since it uses as much as digits as its factorization.

12201110121121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12201110121121 its reverse (12112101110221), we get a palindrome (24313211231342).

The spelling of 12201110121121 in words is "twelve trillion, two hundred one billion, one hundred ten million, one hundred twenty-one thousand, one hundred twenty-one".