224101221 has 8 divisors (see below), whose sum is σ = 300951840. Its totient is φ = 148325712.

The previous prime is 224101177. The next prime is 224101277. The reversal of 224101221 is 122101422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 224101221 - 2¹¹ = 224099173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 224101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224121221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268290 + ... + 269123.

It is an arithmetic number, because the mean of its divisors is an integer number (37618980).

Almost surely, 2^224101221 is an apocalyptic number.

It is an amenable number.

224101221 is a deficient number, since it is larger than the sum of its proper divisors (76850619).

224101221 is a wasteful number, since it uses less digits than its factorization.

224101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537555.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 224101221 is about 14970.0107214390. The cubic root of 224101221 is about 607.4092587461.

Adding to 224101221 its reverse (122101422), we get a palindrome (346202643).

The spelling of 224101221 in words is "two hundred twenty-four million, one hundred one thousand, two hundred twenty-one".