12021122012111 has 2 divisors, whose sum is σ = 12021122012112. Its totient is φ = 12021122012110.

The previous prime is 12021122012093. The next prime is 12021122012171. The reversal of 12021122012111 is 11121022112021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021122012111 - 2³⁰ = 12020048270287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12021122012111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021122012171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010561006055 + 6010561006056.

It is an arithmetic number, because the mean of its divisors is an integer number (6010561006056).

Almost surely, 2^{12021122012111} is an apocalyptic number.

12021122012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021122012111 is an equidigital number, since it uses as much as digits as its factorization.

12021122012111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12021122012111 its reverse (11121022112021), we get a palindrome (23142144124132).

The spelling of 12021122012111 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred eleven".