43430224121 has 4 divisors (see below), whose sum is σ = 44025158772. Its totient is φ = 42835289472.

The previous prime is 43430224091. The next prime is 43430224127. The reversal of 43430224121 is 12142203434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33192831721 + 10237392400 = 182189^2 + 101180^2 .

It is a cyclic number.

It is not a de Polignac number, because 43430224121 - 2¹⁸ = 43429961977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43430224127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297467216 + ... + 297467361.

It is an arithmetic number, because the mean of its divisors is an integer number (11006289693).

Almost surely, 2^43430224121 is an apocalyptic number.

It is an amenable number.

43430224121 is a deficient number, since it is larger than the sum of its proper divisors (594934651).

43430224121 is an equidigital number, since it uses as much as digits as its factorization.

43430224121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594934650.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 43430224121 its reverse (12142203434), we get a palindrome (55572427555).

The spelling of 43430224121 in words is "forty-three billion, four hundred thirty million, two hundred twenty-four thousand, one hundred twenty-one".