43212211645171 has 2 divisors, whose sum is σ = 43212211645172. Its totient is φ = 43212211645170.

The previous prime is 43212211645133. The next prime is 43212211645331. The reversal of 43212211645171 is 17154611221234.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43212211645171 - 2¹¹ = 43212211643123 is a prime.

It is not a weakly prime, because it can be changed into another prime (43212211648171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606105822585 + 21606105822586.

It is an arithmetic number, because the mean of its divisors is an integer number (21606105822586).

Almost surely, 2^{43212211645171} is an apocalyptic number.

43212211645171 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212211645171 is an equidigital number, since it uses as much as digits as its factorization.

43212211645171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The spelling of 43212211645171 in words is "forty-three trillion, two hundred twelve billion, two hundred eleven million, six hundred forty-five thousand, one hundred seventy-one".