1224424100 has 18 divisors (see below), whose sum is σ = 2657000514. Its totient is φ = 489769600.

The previous prime is 1224424013. The next prime is 1224424207. The reversal of 1224424100 is 14244221.

It can be written as a sum of positive squares in 3 ways, for example, as 107661376 + 1116762724 = 10376^2 + 33418^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6122021 + ... + 6122220.

Almost surely, 2^1224424100 is an apocalyptic number.

1224424100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224424100 is an abundant number, since it is smaller than the sum of its proper divisors (1432576414).

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

1224424100 is a wasteful number, since it uses less digits than its factorization.

1224424100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12244255 (or 12244248 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1224424100 is about 34991.7718899744. The cubic root of 1224424100 is about 1069.8197792374.

Adding to 1224424100 its reverse (14244221), we get a palindrome (1238668321).

The spelling of 1224424100 in words is "one billion, two hundred twenty-four million, four hundred twenty-four thousand, one hundred".