224010421 has 2 divisors, whose sum is σ = 224010422. Its totient is φ = 224010420.

The previous prime is 224010407. The next prime is 224010439. The reversal of 224010421 is 124010422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138909796 + 85100625 = 11786^2 + 9225^2 .

It is a cyclic number.

It is not a de Polignac number, because 224010421 - 2²⁵ = 190455989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224010395 and 224010404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224010401) 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 as a sum of consecutive naturals, namely, 112005210 + 112005211.

It is an arithmetic number, because the mean of its divisors is an integer number (112005211).

Almost surely, 2^224010421 is an apocalyptic number.

It is an amenable number.

224010421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224010421 is an equidigital number, since it uses as much as digits as its factorization.

224010421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 224010421 is about 14966.9776842220. The cubic root of 224010421 is about 607.3272121736.

Adding to 224010421 its reverse (124010422), we get a palindrome (348020843).

Subtracting from 224010421 its reverse (124010422), we obtain a palindrome (99999999).

The spelling of 224010421 in words is "two hundred twenty-four million, ten thousand, four hundred twenty-one".