1212201130121 has 2 divisors, whose sum is σ = 1212201130122. Its totient is φ = 1212201130120.

The previous prime is 1212201130069. The next prime is 1212201130123. The reversal of 1212201130121 is 1210311022121.

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., 1208264822521 + 3936307600 = 1099211^2 + 62740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212201130121 - 2³⁰ = 1211127388297 is a prime.

Together with 1212201130123, 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 1212201130121.

It is not a weakly prime, because it can be changed into another prime (1212201130123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606100565060 + 606100565061.

It is an arithmetic number, because the mean of its divisors is an integer number (606100565061).

Almost surely, 2^{1212201130121} is an apocalyptic number.

It is an amenable number.

1212201130121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212201130121 is an equidigital number, since it uses as much as digits as its factorization.

1212201130121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1212201130121 its reverse (1210311022121), we get a palindrome (2422512152242).

The spelling of 1212201130121 in words is "one trillion, two hundred twelve billion, two hundred one million, one hundred thirty thousand, one hundred twenty-one".