12211115167 has 4 divisors (see below), whose sum is σ = 12470926176. Its totient is φ = 11951304160.

The previous prime is 12211115141. The next prime is 12211115177. The reversal of 12211115167 is 76151111221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12211115167 - 2²³ = 12202726559 is a prime.

It is a super-2 number, since 2×12211115167² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211115177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129905434 + ... + 129905527.

It is an arithmetic number, because the mean of its divisors is an integer number (3117731544).

Almost surely, 2^12211115167 is an apocalyptic number.

12211115167 is a deficient number, since it is larger than the sum of its proper divisors (259811009).

12211115167 is an equidigital number, since it uses as much as digits as its factorization.

12211115167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259811008.

The product of its digits is 840, while the sum is 28.

Adding to 12211115167 its reverse (76151111221), we get a palindrome (88362226388).

The spelling of 12211115167 in words is "twelve billion, two hundred eleven million, one hundred fifteen thousand, one hundred sixty-seven".