43200221 has 2 divisors, whose sum is σ = 43200222. Its totient is φ = 43200220.

The previous prime is 43200217. The next prime is 43200253. The reversal of 43200221 is 12200234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23174596 + 20025625 = 4814^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 43200221 - 2² = 43200217 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43200196 and 43200205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43200121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21600110 + 21600111.

It is an arithmetic number, because the mean of its divisors is an integer number (21600111).

Almost surely, 2^43200221 is an apocalyptic number.

It is an amenable number.

43200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43200221 is an equidigital number, since it uses as much as digits as its factorization.

43200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 43200221 is about 6572.6875020801. The cubic root of 43200221 is about 350.8827269252.

Adding to 43200221 its reverse (12200234), we get a palindrome (55400455).

The spelling of 43200221 in words is "forty-three million, two hundred thousand, two hundred twenty-one".