12163922209 has 4 divisors (see below), whose sum is σ = 12692788416. Its totient is φ = 11635056004.

The previous prime is 12163922191. The next prime is 12163922231. The reversal of 12163922209 is 90222936121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12163922209 - 2¹³ = 12163914017 is a prime.

It is a super-2 number, since 2×12163922209² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12163922509) 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, 264433069 + ... + 264433114.

It is an arithmetic number, because the mean of its divisors is an integer number (3173197104).

Almost surely, 2^12163922209 is an apocalyptic number.

It is an amenable number.

12163922209 is a deficient number, since it is larger than the sum of its proper divisors (528866207).

12163922209 is an equidigital number, since it uses as much as digits as its factorization.

12163922209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528866206.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 12163922209 in words is "twelve billion, one hundred sixty-three million, nine hundred twenty-two thousand, two hundred nine".