224212220 has 24 divisors (see below), whose sum is σ = 474012000. Its totient is φ = 89081792.

The previous prime is 224212189. The next prime is 224212259. The reversal of 224212220 is 22212422.

224212220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×224212220² = 100542239194656800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 34640 + ... + 40599.

It is an arithmetic number, because the mean of its divisors is an integer number (19750500).

Almost surely, 2^224212220 is an apocalyptic number.

224212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224212220 is an abundant number, since it is smaller than the sum of its proper divisors (249799780).

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

224212220 is a wasteful number, since it uses less digits than its factorization.

224212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75397 (or 75395 counting only the distinct ones).

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

The square root of 224212220 is about 14973.7176412540. The cubic root of 224212220 is about 607.5095269665.

Adding to 224212220 its reverse (22212422), we get a palindrome (246424642).

The spelling of 224212220 in words is "two hundred twenty-four million, two hundred twelve thousand, two hundred twenty".