224341021 has 4 divisors (see below), whose sum is σ = 225304092. Its totient is φ = 223377952.

The previous prime is 224341009. The next prime is 224341063. The reversal of 224341021 is 120143422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137124100 + 87216921 = 11710^2 + 9339^2 .

It is a cyclic number.

It is not a de Polignac number, because 224341021 - 2¹¹ = 224338973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224341021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224341001) 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, 481186 + ... + 481651.

It is an arithmetic number, because the mean of its divisors is an integer number (56326023).

Almost surely, 2^224341021 is an apocalyptic number.

It is an amenable number.

224341021 is a deficient number, since it is larger than the sum of its proper divisors (963071).

224341021 is an equidigital number, since it uses as much as digits as its factorization.

224341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963070.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 224341021 is about 14978.0179262812. The cubic root of 224341021 is about 607.6258347157.

Adding to 224341021 its reverse (120143422), we get a palindrome (344484443).

It can be divided in two parts, 2243 and 41021, that added together give a square (43264 = 208²).

The spelling of 224341021 in words is "two hundred twenty-four million, three hundred forty-one thousand, twenty-one".