12017032209 has 128 divisors (see below), whose sum is σ = 22811443200. Its totient is φ = 6081143040.

The previous prime is 12017032207. The next prime is 12017032229. The reversal of 12017032209 is 90223071021.

It is not a de Polignac number, because 12017032209 - 2¹ = 12017032207 is a prime.

It is a super-2 number, since 2×12017032209² (a number of 21 digits) contains 22 as substring.

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 (12017032207) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13608882 + ... + 13609764.

It is an arithmetic number, because the mean of its divisors is an integer number (178214400).

Almost surely, 2^12017032209 is an apocalyptic number.

It is an amenable number.

12017032209 is a deficient number, since it is larger than the sum of its proper divisors (10794410991).

12017032209 is a wasteful number, since it uses less digits than its factorization.

12017032209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The spelling of 12017032209 in words is "twelve billion, seventeen million, thirty-two thousand, two hundred nine".