12104220 has 48 divisors (see below), whose sum is σ = 34409088. Its totient is φ = 3178560.

The previous prime is 12104219. The next prime is 12104227. The reversal of 12104220 is 2240121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12104196 and 12104205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2515 + ... + 5525.

It is an arithmetic number, because the mean of its divisors is an integer number (716856).

Almost surely, 2^12104220 is an apocalyptic number.

12104220 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 12104220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17204544).

12104220 is an abundant number, since it is smaller than the sum of its proper divisors (22304868).

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

12104220 is a wasteful number, since it uses less digits than its factorization.

12104220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090 (or 3088 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12104220 is about 3479.1119556577. Note that the first 3 decimals coincide. The cubic root of 12104220 is about 229.6037284862.

Adding to 12104220 its reverse (2240121), we get a palindrome (14344341).

The spelling of 12104220 in words is "twelve million, one hundred four thousand, two hundred twenty".