43110801221 has 2 divisors, whose sum is σ = 43110801222. Its totient is φ = 43110801220.

The previous prime is 43110801113. The next prime is 43110801229. The reversal of 43110801221 is 12210801134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35008281025 + 8102520196 = 187105^2 + 90014^2 .

It is a cyclic number.

It is not a de Polignac number, because 43110801221 - 2³⁰ = 42037059397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43110801229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21555400610 + 21555400611.

It is an arithmetic number, because the mean of its divisors is an integer number (21555400611).

Almost surely, 2^43110801221 is an apocalyptic number.

It is an amenable number.

43110801221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43110801221 is an equidigital number, since it uses as much as digits as its factorization.

43110801221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 43110801221 in words is "forty-three billion, one hundred ten million, eight hundred one thousand, two hundred twenty-one".