224102221 has 4 divisors (see below), whose sum is σ = 256116832. Its totient is φ = 192087612.

The previous prime is 224102213. The next prime is 224102243. The reversal of 224102221 is 122201422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 224102221 - 2³ = 224102213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224102195 and 224102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224102261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16007295 + ... + 16007308.

It is an arithmetic number, because the mean of its divisors is an integer number (64029208).

Almost surely, 2^224102221 is an apocalyptic number.

It is an amenable number.

224102221 is a deficient number, since it is larger than the sum of its proper divisors (32014611).

224102221 is an equidigital number, since it uses as much as digits as its factorization.

224102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32014610.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 224102221 is about 14970.0441215115. The cubic root of 224102221 is about 607.4101622193.

Adding to 224102221 its reverse (122201422), we get a palindrome (346303643).

The spelling of 224102221 in words is "two hundred twenty-four million, one hundred two thousand, two hundred twenty-one".