224342021 has 8 divisors (see below), whose sum is σ = 226342080. Its totient is φ = 222347488.

The previous prime is 224342017. The next prime is 224342029. The reversal of 224342021 is 120243422.

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

It is a cyclic number.

It is not a de Polignac number, because 224342021 - 2² = 224342017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224341984 and 224342002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224342029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138800 + ... + 140406.

It is an arithmetic number, because the mean of its divisors is an integer number (28292760).

Almost surely, 2^224342021 is an apocalyptic number.

It is an amenable number.

224342021 is a deficient number, since it is larger than the sum of its proper divisors (2000059).

224342021 is a wasteful number, since it uses less digits than its factorization.

224342021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 224342021 is about 14978.0513084980. The cubic root of 224342021 is about 607.6267375450.

Adding to 224342021 its reverse (120243422), we get a palindrome (344585443).

The spelling of 224342021 in words is "two hundred twenty-four million, three hundred forty-two thousand, twenty-one".