12209572109 has 12 divisors (see below), whose sum is σ = 14205432384. Its totient is φ = 10463534424.

The previous prime is 12209572093. The next prime is 12209572223. The reversal of 12209572109 is 90127590221.

It is not a de Polignac number, because 12209572109 - 2⁴ = 12209572093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209577109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318134 + ... + 354440.

It is an arithmetic number, because the mean of its divisors is an integer number (1183786032).

Almost surely, 2^12209572109 is an apocalyptic number.

It is an amenable number.

12209572109 is a deficient number, since it is larger than the sum of its proper divisors (1995860275).

12209572109 is an equidigital number, since it uses as much as digits as its factorization.

12209572109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43184 (or 43177 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 12209572109 in words is "twelve billion, two hundred nine million, five hundred seventy-two thousand, one hundred nine".