12223770 has 48 divisors (see below), whose sum is σ = 31780512. Its totient is φ = 3007680.

The previous prime is 12223763. The next prime is 12223789. The reversal of 12223770 is 7732221.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 12223770.

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 23 ways as a sum of consecutive naturals, for example, 3865 + ... + 6275.

It is an arithmetic number, because the mean of its divisors is an integer number (662094).

Almost surely, 2^12223770 is an apocalyptic number.

12223770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12223770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15890256).

12223770 is an abundant number, since it is smaller than the sum of its proper divisors (19556742).

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

12223770 is a wasteful number, since it uses less digits than its factorization.

12223770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 12223770 is about 3496.2508491240. The cubic root of 12223770 is about 230.3571640441.

Adding to 12223770 its reverse (7732221), we get a palindrome (19955991).

The spelling of 12223770 in words is "twelve million, two hundred twenty-three thousand, seven hundred seventy".