12222164869 has 4 divisors (see below), whose sum is σ = 12643618860. Its totient is φ = 11800710880.

The previous prime is 12222164849. The next prime is 12222164921. The reversal of 12222164869 is 96846122221.

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 3998032900 + 8224131969 = 63230^2 + 90687^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222164869 - 2⁵ = 12222164837 is a prime.

It is a super-2 number, since 2×12222164869² (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 (12222164809) 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, 210726952 + ... + 210727009.

It is an arithmetic number, because the mean of its divisors is an integer number (3160904715).

Almost surely, 2^12222164869 is an apocalyptic number.

It is an amenable number.

12222164869 is a deficient number, since it is larger than the sum of its proper divisors (421453991).

12222164869 is an equidigital number, since it uses as much as digits as its factorization.

12222164869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421453990.

The product of its digits is 165888, while the sum is 43.

The spelling of 12222164869 in words is "twelve billion, two hundred twenty-two million, one hundred sixty-four thousand, eight hundred sixty-nine".