12206189 has 16 divisors (see below), whose sum is σ = 13406400. Its totient is φ = 11073024.

The previous prime is 12206179. The next prime is 12206191. The reversal of 12206189 is 98160221.

It is a cyclic number.

It is not a de Polignac number, because 12206189 - 2⁸ = 12205933 is a prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68102 + ... + 68280.

It is an arithmetic number, because the mean of its divisors is an integer number (837900).

Almost surely, 2^12206189 is an apocalyptic number.

12206189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12206189 is a deficient number, since it is larger than the sum of its proper divisors (1200211).

12206189 is a wasteful number, since it uses less digits than its factorization.

12206189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 12206189 is about 3493.7356797560. The cubic root of 12206189 is about 230.2466729690.

The spelling of 12206189 in words is "twelve million, two hundred six thousand, one hundred eighty-nine".