12121000210073 has 2 divisors, whose sum is σ = 12121000210074. Its totient is φ = 12121000210072.

The previous prime is 12121000210061. The next prime is 12121000210157. The reversal of 12121000210073 is 37001200012121.

12121000210073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9800825413129 + 2320174796944 = 3130627^2 + 1523212^2 .

It is an emirp because it is prime and its reverse (37001200012121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12121000210073 - 2⁸ = 12121000209817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12121000210043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060500105036 + 6060500105037.

It is an arithmetic number, because the mean of its divisors is an integer number (6060500105037).

Almost surely, 2^{12121000210073} is an apocalyptic number.

It is an amenable number.

12121000210073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121000210073 is an equidigital number, since it uses as much as digits as its factorization.

12121000210073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 12121000210073 its reverse (37001200012121), we get a palindrome (49122200222194).

The spelling of 12121000210073 in words is "twelve trillion, one hundred twenty-one billion, two hundred ten thousand, seventy-three".