43130221571 has 2 divisors, whose sum is σ = 43130221572. Its totient is φ = 43130221570.

The previous prime is 43130221499. The next prime is 43130221613. The reversal of 43130221571 is 17512203134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43130221571 - 2¹⁸ = 43129959427 is a prime.

It is not a weakly prime, because it can be changed into another prime (43130221171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21565110785 + 21565110786.

It is an arithmetic number, because the mean of its divisors is an integer number (21565110786).

Almost surely, 2^43130221571 is an apocalyptic number.

43130221571 is a deficient number, since it is larger than the sum of its proper divisors (1).

43130221571 is an equidigital number, since it uses as much as digits as its factorization.

43130221571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 43130221571 in words is "forty-three billion, one hundred thirty million, two hundred twenty-one thousand, five hundred seventy-one".