12290205 has 16 divisors (see below), whose sum is σ = 19713024. Its totient is φ = 6538560.

The previous prime is 12290203. The next prime is 12290209. The reversal of 12290205 is 50209221.

It is not a de Polignac number, because 12290205 - 2¹ = 12290203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290203) by changing a digit.

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, 7620 + ... + 9090.

It is an arithmetic number, because the mean of its divisors is an integer number (1232064).

Almost surely, 2^12290205 is an apocalyptic number.

12290205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12290205 is a deficient number, since it is larger than the sum of its proper divisors (7422819).

12290205 is a wasteful number, since it uses less digits than its factorization.

12290205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 12290205 is about 3505.7388664873. The cubic root of 12290205 is about 230.7737332028.

Adding to 12290205 its reverse (50209221), we get a palindrome (62499426).

The spelling of 12290205 in words is "twelve million, two hundred ninety thousand, two hundred five".