12208100 has 18 divisors (see below), whose sum is σ = 26491794. Its totient is φ = 4883200.

The previous prime is 12208099. The next prime is 12208111. The reversal of 12208100 is 180221.

It can be written as a sum of positive squares in 3 ways, for example, as 64 + 12208036 = 8^2 + 3494^2 .

It is a super-2 number, since 2×12208100² = 298075411220000, which contains 22 as substring.

It is a plaindrome in base 15.

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 5 ways as a sum of consecutive naturals, for example, 60941 + ... + 61140.

Almost surely, 2^12208100 is an apocalyptic number.

12208100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12208100 is an abundant number, since it is smaller than the sum of its proper divisors (14283694).

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

12208100 is a wasteful number, since it uses less digits than its factorization.

12208100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122095 (or 122088 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 12208100 is about 3494.0091585455. The cubic root of 12208100 is about 230.2586881424.

Adding to 12208100 its reverse (180221), we get a palindrome (12388321).

The spelling of 12208100 in words is "twelve million, two hundred eight thousand, one hundred".