43321424121 has 6 divisors (see below), whose sum is σ = 62575390410. Its totient is φ = 28880949408.

The previous prime is 43321424087. The next prime is 43321424129. The reversal of 43321424121 is 12142412334.

43321424121 is a `hidden beast` number, since 4 + 33 + 214 + 2 + 412 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40034007225 + 3287416896 = 200085^2 + 57336^2 .

It is not a de Polignac number, because 43321424121 - 2⁶ = 43321424057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43321424129) 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 5 ways as a sum of consecutive naturals, for example, 2406745776 + ... + 2406745793.

It is an arithmetic number, because the mean of its divisors is an integer number (10429231735).

Almost surely, 2^43321424121 is an apocalyptic number.

It is an amenable number.

43321424121 is a deficient number, since it is larger than the sum of its proper divisors (19253966289).

43321424121 is a wasteful number, since it uses less digits than its factorization.

43321424121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813491575 (or 4813491572 counting only the distinct ones).

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

Adding to 43321424121 its reverse (12142412334), we get a palindrome (55463836455).

The spelling of 43321424121 in words is "forty-three billion, three hundred twenty-one million, four hundred twenty-four thousand, one hundred twenty-one".