12001210201121 has 2 divisors, whose sum is σ = 12001210201122. Its totient is φ = 12001210201120.

The previous prime is 12001210201111. The next prime is 12001210201133. The reversal of 12001210201121 is 12110201210021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11826452759521 + 174757441600 = 3438961^2 + 418040^2 .

It is an emirp because it is prime and its reverse (12110201210021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001210201121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001210201096 and 12001210201105.

It is not a weakly prime, because it can be changed into another prime (12001210201111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000605100560 + 6000605100561.

It is an arithmetic number, because the mean of its divisors is an integer number (6000605100561).

Almost surely, 2^{12001210201121} is an apocalyptic number.

It is an amenable number.

12001210201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001210201121 is an equidigital number, since it uses as much as digits as its factorization.

12001210201121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12001210201121 its reverse (12110201210021), we get a palindrome (24111411411142).

The spelling of 12001210201121 in words is "twelve trillion, one billion, two hundred ten million, two hundred one thousand, one hundred twenty-one".