43122244221 has 12 divisors (see below), whose sum is σ = 71185927072. Its totient is φ = 24641282376.

The previous prime is 43122244169. The next prime is 43122244237. The reversal of 43122244221 is 12244222134.

It is a happy number.

43122244221 is a `hidden beast` number, since 4 + 3 + 12 + 224 + 422 + 1 = 666.

It is not a de Polignac number, because 43122244221 - 2¹⁷ = 43122113149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43122246221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342239971 + ... + 342240096.

Almost surely, 2^43122244221 is an apocalyptic number.

It is an amenable number.

43122244221 is a deficient number, since it is larger than the sum of its proper divisors (28063682851).

43122244221 is a wasteful number, since it uses less digits than its factorization.

43122244221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684480080 (or 684480077 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

Adding to 43122244221 its reverse (12244222134), we get a palindrome (55366466355).

The spelling of 43122244221 in words is "forty-three billion, one hundred twenty-two million, two hundred forty-four thousand, two hundred twenty-one".