12121002002111 has 2 divisors, whose sum is σ = 12121002002112. Its totient is φ = 12121002002110.

The previous prime is 12121002002023. The next prime is 12121002002191. The reversal of 12121002002111 is 11120020012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121002002111 - 2³⁸ = 11846124095167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121002002191) 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, 6060501001055 + 6060501001056.

It is an arithmetic number, because the mean of its divisors is an integer number (6060501001056).

Almost surely, 2^{12121002002111} is an apocalyptic number.

12121002002111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121002002111 is an equidigital number, since it uses as much as digits as its factorization.

12121002002111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121002002111 its reverse (11120020012121), we get a palindrome (23241022014232).

The spelling of 12121002002111 in words is "twelve trillion, one hundred twenty-one billion, two million, two thousand, one hundred eleven".