43221424213 has 6 divisors (see below), whose sum is σ = 47507846582. Its totient is φ = 39292203720.

The previous prime is 43221424199. The next prime is 43221424217. The reversal of 43221424213 is 31242412234.

It can be written as a sum of positive squares in only one way, i.e., 35059566564 + 8161857649 = 187242^2 + 90343^2 .

It is not a de Polignac number, because 43221424213 - 2⁹ = 43221423701 is a prime.

It is a super-2 number, since 2×43221424213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43221424217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178600806 + ... + 178601047.

Almost surely, 2^43221424213 is an apocalyptic number.

It is an amenable number.

43221424213 is a deficient number, since it is larger than the sum of its proper divisors (4286422369).

43221424213 is a wasteful number, since it uses less digits than its factorization.

43221424213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357201875 (or 357201864 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 43221424213 its reverse (31242412234), we get a palindrome (74463836447).

The spelling of 43221424213 in words is "forty-three billion, two hundred twenty-one million, four hundred twenty-four thousand, two hundred thirteen".