1224612220 has 48 divisors (see below), whose sum is σ = 2858865408. Its totient is φ = 437575680.

The previous prime is 1224612209. The next prime is 1224612229. The reversal of 1224612220 is 222164221.

It is a junction number, because it is equal to n+sod(n) for n = 1224612191 and 1224612200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224612229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67909 + ... + 84028.

It is an arithmetic number, because the mean of its divisors is an integer number (59559696).

Almost surely, 2^1224612220 is an apocalyptic number.

1224612220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224612220 is an abundant number, since it is smaller than the sum of its proper divisors (1634253188).

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

1224612220 is a wasteful number, since it uses less digits than its factorization.

1224612220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151990 (or 151988 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1224612220 is about 34994.4598472387. The cubic root of 1224612220 is about 1069.8745653176.

Adding to 1224612220 its reverse (222164221), we get a palindrome (1446776441).

The spelling of 1224612220 in words is "one billion, two hundred twenty-four million, six hundred twelve thousand, two hundred twenty".