12121002202171 has 2 divisors, whose sum is σ = 12121002202172. Its totient is φ = 12121002202170.

The previous prime is 12121002202159. The next prime is 12121002202187. The reversal of 12121002202171 is 17120220012121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12121002202171 - 2¹⁷ = 12121002071099 is a prime.

It is a super-2 number, since 2×12121002202171² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12121002902171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060501101085 + 6060501101086.

It is an arithmetic number, because the mean of its divisors is an integer number (6060501101086).

Almost surely, 2^{12121002202171} is an apocalyptic number.

12121002202171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121002202171 is an equidigital number, since it uses as much as digits as its factorization.

12121002202171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 12121002202171 its reverse (17120220012121), we get a palindrome (29241222214292).

The spelling of 12121002202171 in words is "twelve trillion, one hundred twenty-one billion, two million, two hundred two thousand, one hundred seventy-one".