12240052209 has 64 divisors (see below), whose sum is σ = 23590932480. Its totient is φ = 6081989760.

The previous prime is 12240052199. The next prime is 12240052217. The reversal of 12240052209 is 90225004221.

It is a happy number.

12240052209 is a `hidden beast` number, since 1 + 2 + 2 + 400 + 52 + 209 = 666.

It is not a de Polignac number, because 12240052209 - 2²⁴ = 12223274993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12240052259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80172 + ... + 175805.

It is an arithmetic number, because the mean of its divisors is an integer number (368608320).

Almost surely, 2^12240052209 is an apocalyptic number.

It is an amenable number.

12240052209 is a deficient number, since it is larger than the sum of its proper divisors (11350880271).

12240052209 is a wasteful number, since it uses less digits than its factorization.

12240052209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256027 (or 256021 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 12240052209 in words is "twelve billion, two hundred forty million, fifty-two thousand, two hundred nine".