12210550 has 36 divisors (see below), whose sum is σ = 24943716. Its totient is φ = 4410400.

The previous prime is 12210503. The next prime is 12210563. The reversal of 12210550 is 5501221.

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 17 ways as a sum of consecutive naturals, for example, 81876 + ... + 82024.

It is an arithmetic number, because the mean of its divisors is an integer number (692881).

Almost surely, 2^12210550 is an apocalyptic number.

12210550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12210550 is an abundant number, since it is smaller than the sum of its proper divisors (12733166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12210550 is a wasteful number, since it uses less digits than its factorization.

12210550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 12210550 is about 3494.3597410685. The cubic root of 12210550 is about 230.2740903767.

Adding to 12210550 its reverse (5501221), we get a palindrome (17711771).

The spelling of 12210550 in words is "twelve million, two hundred ten thousand, five hundred fifty".