43044244121 has 2 divisors, whose sum is σ = 43044244122. Its totient is φ = 43044244120.

The previous prime is 43044244109. The next prime is 43044244123. The reversal of 43044244121 is 12144244034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41642116096 + 1402128025 = 204064^2 + 37445^2 .

It is a cyclic number.

It is not a de Polignac number, because 43044244121 - 2⁶ = 43044244057 is a prime.

Together with 43044244123, 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 (43044244123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21522122060 + 21522122061.

It is an arithmetic number, because the mean of its divisors is an integer number (21522122061).

Almost surely, 2^43044244121 is an apocalyptic number.

It is an amenable number.

43044244121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43044244121 is an equidigital number, since it uses as much as digits as its factorization.

43044244121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 43044244121 its reverse (12144244034), we get a palindrome (55188488155).

The spelling of 43044244121 in words is "forty-three billion, forty-four million, two hundred forty-four thousand, one hundred twenty-one".