1220203224 has 64 divisors (see below), whose sum is σ = 3392373600. Its totient is φ = 406384128.

The previous prime is 1220203223. The next prime is 1220203247. The reversal of 1220203224 is 4223020221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220203197 and 1220203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220203223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411732 + ... + 414684.

Almost surely, 2^1220203224 is an apocalyptic number.

It is an amenable number.

1220203224 is an abundant number, since it is smaller than the sum of its proper divisors (2172170376).

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

1220203224 is a wasteful number, since it uses less digits than its factorization.

1220203224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4881 (or 4871 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1220203224 is about 34931.4074151042. The cubic root of 1220203224 is about 1068.5890576979.

Adding to 1220203224 its reverse (4223020221), we get a palindrome (5443223445).

The spelling of 1220203224 in words is "one billion, two hundred twenty million, two hundred three thousand, two hundred twenty-four".