12011120111 has 2 divisors, whose sum is σ = 12011120112. Its totient is φ = 12011120110.

The previous prime is 12011120087. The next prime is 12011120129. The reversal of 12011120111 is 11102111021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011120111 - 2²² = 12006925807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011120092 and 12011120101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011120131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005560055 + 6005560056.

It is an arithmetic number, because the mean of its divisors is an integer number (6005560056).

Almost surely, 2^12011120111 is an apocalyptic number.

12011120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011120111 is an equidigital number, since it uses as much as digits as its factorization.

12011120111 is an evil number, because the sum of its binary digits is even.

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

Adding to 12011120111 its reverse (11102111021), we get a palindrome (23113231132).

The spelling of 12011120111 in words is "twelve billion, eleven million, one hundred twenty thousand, one hundred eleven".