111043044421 has 12 divisors (see below), whose sum is σ = 120975510144. Its totient is φ = 101805157800.

The previous prime is 111043044271. The next prime is 111043044461. The reversal of 111043044421 is 124440340111.

It is a de Polignac number, because none of the positive numbers 2^k-111043044421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111043044461) 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 11 ways as a sum of consecutive naturals, for example, 4950075 + ... + 4972456.

It is an arithmetic number, because the mean of its divisors is an integer number (10081292512).

Almost surely, 2^111043044421 is an apocalyptic number.

It is an amenable number.

111043044421 is a deficient number, since it is larger than the sum of its proper divisors (9932465723).

111043044421 is an equidigital number, since it uses as much as digits as its factorization.

111043044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9922600 (or 9922581 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 111043044421 its reverse (124440340111), we get a palindrome (235483384532).

The spelling of 111043044421 in words is "one hundred eleven billion, forty-three million, forty-four thousand, four hundred twenty-one".