12214224 has 90 divisors (see below), whose sum is σ = 37626498. Its totient is φ = 3696000.

The previous prime is 12214183. The next prime is 12214243. The reversal of 12214224 is 42241221.

It can be written as a sum of positive squares in only one way, i.e., 11778624 + 435600 = 3432^2 + 660^2 .

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 = 12214197 and 12214206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17074 + ... + 17774.

Almost surely, 2^12214224 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 12214224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18813249).

12214224 is an abundant number, since it is smaller than the sum of its proper divisors (25412274).

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

12214224 is a wasteful number, since it uses less digits than its factorization.

12214224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 717 counting only the distinct ones).

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

The square root of 12214224 is about 3494.8854058467. The cubic root of 12214224 is about 230.2971835808.

Adding to 12214224 its reverse (42241221), we get a palindrome (54455445).

It can be divided in two parts, 1221 and 4224, that added together give a palindrome (5445).

The spelling of 12214224 in words is "twelve million, two hundred fourteen thousand, two hundred twenty-four".