43113421121 has 4 divisors (see below), whose sum is σ = 43306755072. Its totient is φ = 42920087172.

The previous prime is 43113421103. The next prime is 43113421199. The reversal of 43113421121 is 12112431134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43113421121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43113441121) 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 3 ways as a sum of consecutive naturals, for example, 96666641 + ... + 96667086.

It is an arithmetic number, because the mean of its divisors is an integer number (10826688768).

Almost surely, 2^43113421121 is an apocalyptic number.

It is an amenable number.

43113421121 is a deficient number, since it is larger than the sum of its proper divisors (193333951).

43113421121 is a wasteful number, since it uses less digits than its factorization.

43113421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193333950.

The product of its digits is 576, while the sum is 23.

Adding to 43113421121 its reverse (12112431134), we get a palindrome (55225852255).

The spelling of 43113421121 in words is "forty-three billion, one hundred thirteen million, four hundred twenty-one thousand, one hundred twenty-one".