12011230111 has 2 divisors, whose sum is σ = 12011230112. Its totient is φ = 12011230110.

The previous prime is 12011230103. The next prime is 12011230139. The reversal of 12011230111 is 11103211021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011230111 - 2³ = 12011230103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011230091 and 12011230100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011230151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005615055 + 6005615056.

It is an arithmetic number, because the mean of its divisors is an integer number (6005615056).

Almost surely, 2^12011230111 is an apocalyptic number.

12011230111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011230111 is an equidigital number, since it uses as much as digits as its factorization.

12011230111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12011230111 its reverse (11103211021), we get a palindrome (23114441132).

The spelling of 12011230111 in words is "twelve billion, eleven million, two hundred thirty thousand, one hundred eleven".