43540221211 has 8 divisors (see below), whose sum is σ = 46104326064. Its totient is φ = 40976440320.

The previous prime is 43540221187. The next prime is 43540221227. The reversal of 43540221211 is 11212204534.

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 43540221211 - 2⁹ = 43540220699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43540221271) 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, 229836 + ... + 374038.

It is an arithmetic number, because the mean of its divisors is an integer number (5763040758).

Almost surely, 2^43540221211 is an apocalyptic number.

43540221211 is a deficient number, since it is larger than the sum of its proper divisors (2564104853).

43540221211 is a wasteful number, since it uses less digits than its factorization.

43540221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161981.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 43540221211 its reverse (11212204534), we get a palindrome (54752425745).

The spelling of 43540221211 in words is "forty-three billion, five hundred forty million, two hundred twenty-one thousand, two hundred eleven".