12223500 has 96 divisors (see below), whose sum is σ = 36953280. Its totient is φ = 3136000.

The previous prime is 12223483. The next prime is 12223501. The reversal of 12223500 is 532221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12223500.

It is not an unprimeable number, because it can be changed into a prime (12223501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43360 + ... + 43640.

It is an arithmetic number, because the mean of its divisors is an integer number (384930).

Almost surely, 2^12223500 is an apocalyptic number.

12223500 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 12223500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18476640).

12223500 is an abundant number, since it is smaller than the sum of its proper divisors (24729780).

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

12223500 is a wasteful number, since it uses less digits than its factorization.

12223500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 12223500 is about 3496.2122361207. The cubic root of 12223500 is about 230.3554679800.

Adding to 12223500 its reverse (532221), we get a palindrome (12755721).

The spelling of 12223500 in words is "twelve million, two hundred twenty-three thousand, five hundred".