4234004024221 has 2 divisors, whose sum is σ = 4234004024222. Its totient is φ = 4234004024220.

The previous prime is 4234004024219. The next prime is 4234004024249. The reversal of 4234004024221 is 1224204004324.

4234004024221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (4234004024249) can be obtained adding 4234004024221 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3348391279321 + 885612744900 = 1829861^2 + 941070^2 .

It is a cyclic number.

It is not a de Polignac number, because 4234004024221 - 2¹ = 4234004024219 is a prime.

Together with 4234004024219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4234004024221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4234004024251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2117002012110 + 2117002012111.

It is an arithmetic number, because the mean of its divisors is an integer number (2117002012111).

Almost surely, 2^{4234004024221} is an apocalyptic number.

It is an amenable number.

4234004024221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4234004024221 is an equidigital number, since it uses as much as digits as its factorization.

4234004024221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 4234004024221 its reverse (1224204004324), we get a palindrome (5458208028545).

The spelling of 4234004024221 in words is "four trillion, two hundred thirty-four billion, four million, twenty-four thousand, two hundred twenty-one".