12223311161 has 4 divisors (see below), whose sum is σ = 12259582452. Its totient is φ = 12187039872.

The previous prime is 12223311143. The next prime is 12223311167. The reversal of 12223311161 is 16111332221.

12223311161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3714171136 + 8509140025 = 60944^2 + 92245^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223311161 - 2²² = 12219116857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223311167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18135140 + ... + 18135813.

It is an arithmetic number, because the mean of its divisors is an integer number (3064895613).

Almost surely, 2^12223311161 is an apocalyptic number.

It is an amenable number.

12223311161 is a deficient number, since it is larger than the sum of its proper divisors (36271291).

12223311161 is an equidigital number, since it uses as much as digits as its factorization.

12223311161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36271290.

The product of its digits is 432, while the sum is 23.

Adding to 12223311161 its reverse (16111332221), we get a palindrome (28334643382).

The spelling of 12223311161 in words is "twelve billion, two hundred twenty-three million, three hundred eleven thousand, one hundred sixty-one".