12011020012111 has 2 divisors, whose sum is σ = 12011020012112. Its totient is φ = 12011020012110.

The previous prime is 12011020012109. The next prime is 12011020012151. The reversal of 12011020012111 is 11121002011021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011020012111 - 2¹ = 12011020012109 is a prime.

Together with 12011020012109, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12011020012091 and 12011020012100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011020012151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005510006055 + 6005510006056.

It is an arithmetic number, because the mean of its divisors is an integer number (6005510006056).

Almost surely, 2^{12011020012111} is an apocalyptic number.

12011020012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011020012111 is an equidigital number, since it uses as much as digits as its factorization.

12011020012111 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 13.

Adding to 12011020012111 its reverse (11121002011021), we get a palindrome (23132022023132).

The spelling of 12011020012111 in words is "twelve trillion, eleven billion, twenty million, twelve thousand, one hundred eleven".