12121011801071 has 2 divisors, whose sum is σ = 12121011801072. Its totient is φ = 12121011801070.

The previous prime is 12121011800999. The next prime is 12121011801109. The reversal of 12121011801071 is 17010811012121.

12121011801071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121011801071 - 2³⁴ = 12103831931887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12121011801071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121011801571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060505900535 + 6060505900536.

It is an arithmetic number, because the mean of its divisors is an integer number (6060505900536).

Almost surely, 2^{12121011801071} is an apocalyptic number.

12121011801071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121011801071 is an equidigital number, since it uses as much as digits as its factorization.

12121011801071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 26.

Adding to 12121011801071 its reverse (17010811012121), we get a palindrome (29131822813192).

The spelling of 12121011801071 in words is "twelve trillion, one hundred twenty-one billion, eleven million, eight hundred one thousand, seventy-one".