43443221201 has 4 divisors (see below), whose sum is σ = 44502812004. Its totient is φ = 42383630400.

The previous prime is 43443221189. The next prime is 43443221243. The reversal of 43443221201 is 10212234434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8059730176 + 35383491025 = 89776^2 + 188105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43443221201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43443221501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529795340 + ... + 529795421.

It is an arithmetic number, because the mean of its divisors is an integer number (11125703001).

Almost surely, 2^43443221201 is an apocalyptic number.

43443221201 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43443221201 is a deficient number, since it is larger than the sum of its proper divisors (1059590803).

43443221201 is a wasteful number, since it uses less digits than its factorization.

43443221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059590802.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 43443221201 its reverse (10212234434), we get a palindrome (53655455635).

The spelling of 43443221201 in words is "forty-three billion, four hundred forty-three million, two hundred twenty-one thousand, two hundred one".