43522322121 has 12 divisors (see below), whose sum is σ = 63184693572. Its totient is φ = 28867596576.

The previous prime is 43522322119. The next prime is 43522322147. The reversal of 43522322121 is 12122322534.

43522322121 is a `hidden beast` number, since 435 + 2 + 2 + 3 + 221 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22669518096 + 20852804025 = 150564^2 + 144405^2 .

It is not a de Polignac number, because 43522322121 - 2¹ = 43522322119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43522326121) 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, 12271866 + ... + 12275411.

It is an arithmetic number, because the mean of its divisors is an integer number (5265391131).

Almost surely, 2^43522322121 is an apocalyptic number.

It is an amenable number.

43522322121 is a deficient number, since it is larger than the sum of its proper divisors (19662371451).

43522322121 is a wasteful number, since it uses less digits than its factorization.

43522322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24547480 (or 24547477 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 43522322121 its reverse (12122322534), we get a palindrome (55644644655).

The spelling of 43522322121 in words is "forty-three billion, five hundred twenty-two million, three hundred twenty-two thousand, one hundred twenty-one".