43112344221 has 12 divisors (see below), whose sum is σ = 63448356348. Its totient is φ = 28199268864.

The previous prime is 43112344183. The next prime is 43112344243. The reversal of 43112344221 is 12244321134.

43112344221 is a `hidden beast` number, since 4 + 3 + 1 + 1 + 234 + 422 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32738921721 + 10373422500 = 180939^2 + 101850^2 .

It is not a de Polignac number, because 43112344221 - 2⁶ = 43112344157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43112344291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45190660 + ... + 45191613.

It is an arithmetic number, because the mean of its divisors is an integer number (5287363029).

Almost surely, 2^43112344221 is an apocalyptic number.

It is an amenable number.

43112344221 is a deficient number, since it is larger than the sum of its proper divisors (20336012127).

43112344221 is a wasteful number, since it uses less digits than its factorization.

43112344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90382332 (or 90382329 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 43112344221 its reverse (12244321134), we get a palindrome (55356665355).

The spelling of 43112344221 in words is "forty-three billion, one hundred twelve million, three hundred forty-four thousand, two hundred twenty-one".