220020224 has 20 divisors (see below), whose sum is σ = 439611744. Its totient is φ = 110009856.

The previous prime is 220020217. The next prime is 220020233. The reversal of 220020224 is 422020022.

It is a junction number, because it is equal to n+sod(n) for n = 220020199 and 220020208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214352 + ... + 215375.

Almost surely, 2^220020224 is an apocalyptic number.

It is an amenable number.

220020224 is a deficient number, since it is larger than the sum of its proper divisors (219591520).

220020224 is an frugal number, since it uses more digits than its factorization.

220020224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429745 (or 429729 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 220020224 is about 14833.0787094251. The cubic root of 220020224 is about 603.6995713645.

Adding to 220020224 its reverse (422020022), we get a palindrome (642040246).

The spelling of 220020224 in words is "two hundred twenty million, twenty thousand, two hundred twenty-four".