12190205 has 16 divisors (see below), whose sum is σ = 15168384. Its totient is φ = 9397440.

The previous prime is 12190187. The next prime is 12190219. The reversal of 12190205 is 50209121.

It is not a de Polignac number, because 12190205 - 2⁸ = 12189949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23984 + ... + 24486.

It is an arithmetic number, because the mean of its divisors is an integer number (948024).

Almost surely, 2^12190205 is an apocalyptic number.

It is an amenable number.

12190205 is a deficient number, since it is larger than the sum of its proper divisors (2978179).

12190205 is a wasteful number, since it uses less digits than its factorization.

12190205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 12190205 is about 3491.4474075947. The cubic root of 12190205 is about 230.1461264232.

Adding to 12190205 its reverse (50209121), we get a palindrome (62399326).

The spelling of 12190205 in words is "twelve million, one hundred ninety thousand, two hundred five".