43334234221 has 2 divisors, whose sum is σ = 43334234222. Its totient is φ = 43334234220.

The previous prime is 43334234171. The next prime is 43334234291. The reversal of 43334234221 is 12243243334.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29151806121 + 14182428100 = 170739^2 + 119090^2 .

It is a cyclic number.

It is not a de Polignac number, because 43334234221 - 2¹⁵ = 43334201453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43334234291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21667117110 + 21667117111.

It is an arithmetic number, because the mean of its divisors is an integer number (21667117111).

Almost surely, 2^43334234221 is an apocalyptic number.

It is an amenable number.

43334234221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43334234221 is an equidigital number, since it uses as much as digits as its factorization.

43334234221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 31.

Adding to 43334234221 its reverse (12243243334), we get a palindrome (55577477555).

The spelling of 43334234221 in words is "forty-three billion, three hundred thirty-four million, two hundred thirty-four thousand, two hundred twenty-one".