12102200 has 48 divisors (see below), whose sum is σ = 30701160. Its totient is φ = 4400000.

The previous prime is 12102199. The next prime is 12102239. The reversal of 12102200 is 220121.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 551 + ... + 4950.

Almost surely, 2^12102200 is an apocalyptic number.

12102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15350580).

12102200 is an abundant number, since it is smaller than the sum of its proper divisors (18598960).

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

12102200 is a wasteful number, since it uses less digits than its factorization.

12102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 12102200 is about 3478.8216395786. The cubic root of 12102200 is about 229.5909553835.

Adding to 12102200 its reverse (220121), we get a palindrome (12322321).

The spelling of 12102200 in words is "twelve million, one hundred two thousand, two hundred".