12111212167 has 2 divisors, whose sum is σ = 12111212168. Its totient is φ = 12111212166.

The previous prime is 12111212149. The next prime is 12111212207. The reversal of 12111212167 is 76121211121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111212167 - 2²⁷ = 11976994439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111212467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055606083 + 6055606084.

It is an arithmetic number, because the mean of its divisors is an integer number (6055606084).

Almost surely, 2^12111212167 is an apocalyptic number.

12111212167 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111212167 is an equidigital number, since it uses as much as digits as its factorization.

12111212167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 25.

Adding to 12111212167 its reverse (76121211121), we get a palindrome (88232423288).

The spelling of 12111212167 in words is "twelve billion, one hundred eleven million, two hundred twelve thousand, one hundred sixty-seven".