224120220 has 48 divisors (see below), whose sum is σ = 636145440. Its totient is φ = 58945536.

The previous prime is 224120213. The next prime is 224120251. The reversal of 224120220 is 22021422.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 224120220.

It is a congruent number.

It is an unprimeable number.

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, 21205 + ... + 29964.

It is an arithmetic number, because the mean of its divisors is an integer number (13253030).

Almost surely, 2^224120220 is an apocalyptic number.

224120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224120220 is an abundant number, since it is smaller than the sum of its proper divisors (412025220).

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

224120220 is a wasteful number, since it uses less digits than its factorization.

224120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51254 (or 51252 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 224120220 is about 14970.6452766739. The cubic root of 224120220 is about 607.4264233743.

Adding to 224120220 its reverse (22021422), we get a palindrome (246141642).

The spelling of 224120220 in words is "two hundred twenty-four million, one hundred twenty thousand, two hundred twenty".