220401224 has 32 divisors (see below), whose sum is σ = 417451320. Its totient is φ = 109088256.

The previous prime is 220401221. The next prime is 220401239. The reversal of 220401224 is 422104022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 106296100 + 114105124 = 10310^2 + 10682^2 .

It is not an unprimeable number, because it can be changed into a prime (220401221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590702 + ... + 591074.

Almost surely, 2^220401224 is an apocalyptic number.

It is an amenable number.

220401224 is a deficient number, since it is larger than the sum of its proper divisors (197050096).

220401224 is a wasteful number, since it uses less digits than its factorization.

220401224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 220401224 is about 14845.9160714319. The cubic root of 220401224 is about 604.0478376800.

Adding to 220401224 its reverse (422104022), we get a palindrome (642505246).

The spelling of 220401224 in words is "two hundred twenty million, four hundred one thousand, two hundred twenty-four".