12002110121 has 2 divisors, whose sum is σ = 12002110122. Its totient is φ = 12002110120.

The previous prime is 12002110097. The next prime is 12002110151. The reversal of 12002110121 is 12101120021.

12002110121 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., 11116750096 + 885360025 = 105436^2 + 29755^2 .

It is an emirp because it is prime and its reverse (12101120021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12002110121 is a prime.

It is a super-2 number, since 2×12002110121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12002110151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001055060 + 6001055061.

It is an arithmetic number, because the mean of its divisors is an integer number (6001055061).

Almost surely, 2^12002110121 is an apocalyptic number.

It is an amenable number.

12002110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002110121 is an equidigital number, since it uses as much as digits as its factorization.

12002110121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12002110121 its reverse (12101120021), we get a palindrome (24103230142).

The spelling of 12002110121 in words is "twelve billion, two million, one hundred ten thousand, one hundred twenty-one".