12010020011111 has 2 divisors, whose sum is σ = 12010020011112. Its totient is φ = 12010020011110.

The previous prime is 12010020011107. The next prime is 12010020011113. The reversal of 12010020011111 is 11111002001021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12010020011111 - 2² = 12010020011107 is a prime.

Together with 12010020011113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12010020011092 and 12010020011101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12010020011113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005010005555 + 6005010005556.

It is an arithmetic number, because the mean of its divisors is an integer number (6005010005556).

Almost surely, 2^{12010020011111} is an apocalyptic number.

12010020011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010020011111 is an equidigital number, since it uses as much as digits as its factorization.

12010020011111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12010020011111 its reverse (11111002001021), we get a palindrome (23121022012132).

The spelling of 12010020011111 in words is "twelve trillion, ten billion, twenty million, eleven thousand, one hundred eleven".