43111144021 has 8 divisors (see below), whose sum is σ = 47311959744. Its totient is φ = 38957265120.

The previous prime is 43111144009. The next prime is 43111144073. The reversal of 43111144021 is 12044111134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43111144021 - 2⁷ = 43111143893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43111143983 and 43111144001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43111147021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11732280 + ... + 11735953.

It is an arithmetic number, because the mean of its divisors is an integer number (5913994968).

Almost surely, 2^43111144021 is an apocalyptic number.

It is an amenable number.

43111144021 is a deficient number, since it is larger than the sum of its proper divisors (4200815723).

43111144021 is a wasteful number, since it uses less digits than its factorization.

43111144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23468411.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 43111144021 its reverse (12044111134), we get a palindrome (55155255155).

The spelling of 43111144021 in words is "forty-three billion, one hundred eleven million, one hundred forty-four thousand, twenty-one".