2134443440221 has 2 divisors, whose sum is σ = 2134443440222. Its totient is φ = 2134443440220.

The previous prime is 2134443440219. The next prime is 2134443440237. The reversal of 2134443440221 is 1220443444312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1204879428900 + 929564011321 = 1097670^2 + 964139^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134443440221 - 2¹ = 2134443440219 is a prime.

Together with 2134443440219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134443440201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067221720110 + 1067221720111.

It is an arithmetic number, because the mean of its divisors is an integer number (1067221720111).

Almost surely, 2^{2134443440221} is an apocalyptic number.

It is an amenable number.

2134443440221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134443440221 is an equidigital number, since it uses as much as digits as its factorization.

2134443440221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 2134443440221 its reverse (1220443444312), we get a palindrome (3354886884533).

The spelling of 2134443440221 in words is "two trillion, one hundred thirty-four billion, four hundred forty-three million, four hundred forty thousand, two hundred twenty-one".