43211197571 has 2 divisors, whose sum is σ = 43211197572. Its totient is φ = 43211197570.

The previous prime is 43211197541. The next prime is 43211197573. The reversal of 43211197571 is 17579111234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43211197571 - 2²² = 43207003267 is a prime.

Together with 43211197573, 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 (43211197573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21605598785 + 21605598786.

It is an arithmetic number, because the mean of its divisors is an integer number (21605598786).

Almost surely, 2^43211197571 is an apocalyptic number.

43211197571 is a deficient number, since it is larger than the sum of its proper divisors (1).

43211197571 is an equidigital number, since it uses as much as digits as its factorization.

43211197571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 41.

The spelling of 43211197571 in words is "forty-three billion, two hundred eleven million, one hundred ninety-seven thousand, five hundred seventy-one".