4221834012161 has 2 divisors, whose sum is σ = 4221834012162. Its totient is φ = 4221834012160.

The previous prime is 4221834012127. The next prime is 4221834012163. The reversal of 4221834012161 is 1612104381224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4165109539600 + 56724472561 = 2040860^2 + 238169^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221834012161 - 2¹⁰ = 4221834011137 is a prime.

Together with 4221834012163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4221834012163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110917006080 + 2110917006081.

It is an arithmetic number, because the mean of its divisors is an integer number (2110917006081).

Almost surely, 2^{4221834012161} is an apocalyptic number.

It is an amenable number.

4221834012161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221834012161 is an equidigital number, since it uses as much as digits as its factorization.

4221834012161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

Adding to 4221834012161 its reverse (1612104381224), we get a palindrome (5833938393385).

It can be divided in two parts, 422183 and 4012161, that added together give a palindrome (4434344).

The spelling of 4221834012161 in words is "four trillion, two hundred twenty-one billion, eight hundred thirty-four million, twelve thousand, one hundred sixty-one".