1224240220 has 192 divisors, whose sum is σ = 3204956160. Its totient is φ = 383846400.

The previous prime is 1224240203. The next prime is 1224240221. The reversal of 1224240220 is 220424221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224240221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8935992 + ... + 8936128.

It is an arithmetic number, because the mean of its divisors is an integer number (16692480).

Almost surely, 2^1224240220 is an apocalyptic number.

1224240220 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 1224240220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1602478080).

1224240220 is an abundant number, since it is smaller than the sum of its proper divisors (1980715940).

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

1224240220 is a wasteful number, since it uses less digits than its factorization.

1224240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1224240220 is about 34989.1443164876. The cubic root of 1224240220 is about 1069.7662225464.

Adding to 1224240220 its reverse (220424221), we get a palindrome (1444664441).

The spelling of 1224240220 in words is "one billion, two hundred twenty-four million, two hundred forty thousand, two hundred twenty".