12122424 has 48 divisors (see below), whose sum is σ = 33176520. Its totient is φ = 3998400.

The previous prime is 12122419. The next prime is 12122443. The reversal of 12122424 is 42422121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12122397 and 12122406.

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 11 ways as a sum of consecutive naturals, for example, 6439 + ... + 8105.

Almost surely, 2^12122424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16588260).

12122424 is an abundant number, since it is smaller than the sum of its proper divisors (21054096).

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

12122424 is a wasteful number, since it uses less digits than its factorization.

12122424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780 (or 1773 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 12122424 is about 3481.7271576044. The cubic root of 12122424 is about 229.7187741117.

Adding to 12122424 its reverse (42422121), we get a palindrome (54544545).

The spelling of 12122424 in words is "twelve million, one hundred twenty-two thousand, four hundred twenty-four".