43271221 has 8 divisors (see below), whose sum is σ = 49523904. Its totient is φ = 37036320.

The previous prime is 43271191. The next prime is 43271231. The reversal of 43271221 is 12217234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43271221 - 2⁹ = 43270709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43271192 and 43271201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43271231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266 + ... + 9388.

It is an arithmetic number, because the mean of its divisors is an integer number (6190488).

Almost surely, 2^43271221 is an apocalyptic number.

It is an amenable number.

43271221 is a deficient number, since it is larger than the sum of its proper divisors (6252683).

43271221 is an equidigital number, since it uses as much as digits as its factorization.

43271221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891.

The product of its digits is 672, while the sum is 22.

The square root of 43271221 is about 6578.0864238774. The cubic root of 43271221 is about 351.0748481490.

Adding to 43271221 its reverse (12217234), we get a palindrome (55488455).

The spelling of 43271221 in words is "forty-three million, two hundred seventy-one thousand, two hundred twenty-one".