12020201122121 has 2 divisors, whose sum is σ = 12020201122122. Its totient is φ = 12020201122120.

The previous prime is 12020201121991. The next prime is 12020201122123. The reversal of 12020201122121 is 12122110202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10500062544400 + 1520138577721 = 3240380^2 + 1232939^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020201122121 - 2³⁸ = 11745323215177 is a prime.

Together with 12020201122123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12020201122121.

It is not a weakly prime, because it can be changed into another prime (12020201122123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010100561060 + 6010100561061.

It is an arithmetic number, because the mean of its divisors is an integer number (6010100561061).

Almost surely, 2^{12020201122121} is an apocalyptic number.

It is an amenable number.

12020201122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020201122121 is an equidigital number, since it uses as much as digits as its factorization.

12020201122121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12020201122121 its reverse (12122110202021), we get a palindrome (24142311324142).

The spelling of 12020201122121 in words is "twelve trillion, twenty billion, two hundred one million, one hundred twenty-two thousand, one hundred twenty-one".