43144420201 has 2 divisors, whose sum is σ = 43144420202. Its totient is φ = 43144420200.

The previous prime is 43144420169. The next prime is 43144420213. The reversal of 43144420201 is 10202444134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42238470400 + 905949801 = 205520^2 + 30099^2 .

It is a cyclic number.

It is not a de Polignac number, because 43144420201 - 2⁵ = 43144420169 is a prime.

It is a super-2 number, since 2×43144420201² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43144220201) 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 as a sum of consecutive naturals, namely, 21572210100 + 21572210101.

It is an arithmetic number, because the mean of its divisors is an integer number (21572210101).

Almost surely, 2^43144420201 is an apocalyptic number.

It is an amenable number.

43144420201 is a deficient number, since it is larger than the sum of its proper divisors (1).

43144420201 is an equidigital number, since it uses as much as digits as its factorization.

43144420201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 43144420201 its reverse (10202444134), we get a palindrome (53346864335).

The spelling of 43144420201 in words is "forty-three billion, one hundred forty-four million, four hundred twenty thousand, two hundred one".