43123222171 has 2 divisors, whose sum is σ = 43123222172. Its totient is φ = 43123222170.

The previous prime is 43123222147. The next prime is 43123222253. The reversal of 43123222171 is 17122232134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43123222171 - 2¹⁹ = 43122697883 is a prime.

It is a super-2 number, since 2×43123222171² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43123222141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561611085 + 21561611086.

It is an arithmetic number, because the mean of its divisors is an integer number (21561611086).

Almost surely, 2^43123222171 is an apocalyptic number.

43123222171 is a deficient number, since it is larger than the sum of its proper divisors (1).

43123222171 is an equidigital number, since it uses as much as digits as its factorization.

43123222171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The spelling of 43123222171 in words is "forty-three billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred seventy-one".