43075471221 has 20 divisors (see below), whose sum is σ = 64838525664. Its totient is φ = 28497760200.

The previous prime is 43075471217. The next prime is 43075471237. The reversal of 43075471221 is 12217457034.

It is not a de Polignac number, because 43075471221 - 2² = 43075471217 is a prime.

It is a super-2 number, since 2×43075471221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43075471421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2019145 + ... + 2040366.

Almost surely, 2^43075471221 is an apocalyptic number.

It is an amenable number.

43075471221 is a deficient number, since it is larger than the sum of its proper divisors (21763054443).

43075471221 is a wasteful number, since it uses less digits than its factorization.

43075471221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059654 (or 4059645 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 43075471221 in words is "forty-three billion, seventy-five million, four hundred seventy-one thousand, two hundred twenty-one".