12121220020201 has 2 divisors, whose sum is σ = 12121220020202. Its totient is φ = 12121220020200.

The previous prime is 12121220020187. The next prime is 12121220020211. The reversal of 12121220020201 is 10202002212121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10061710880400 + 2059509139801 = 3172020^2 + 1435099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121220020201 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121220020211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060610010100 + 6060610010101.

It is an arithmetic number, because the mean of its divisors is an integer number (6060610010101).

Almost surely, 2^{12121220020201} is an apocalyptic number.

It is an amenable number.

12121220020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121220020201 is an equidigital number, since it uses as much as digits as its factorization.

12121220020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12121220020201 its reverse (10202002212121), we get a palindrome (22323222232322).

The spelling of 12121220020201 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty million, twenty thousand, two hundred one".