111040441421 has 64 divisors (see below), whose sum is σ = 147655495680. Its totient is φ = 81047070720.

The previous prime is 111040441403. The next prime is 111040441429. The reversal of 111040441421 is 124144040111.

It is a de Polignac number, because none of the positive numbers 2^k-111040441421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111040441429) 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 63 ways as a sum of consecutive naturals, for example, 26242376 + ... + 26246606.

It is an arithmetic number, because the mean of its divisors is an integer number (2307117120).

Almost surely, 2^111040441421 is an apocalyptic number.

It is an amenable number.

111040441421 is a deficient number, since it is larger than the sum of its proper divisors (36615054259).

111040441421 is a wasteful number, since it uses less digits than its factorization.

111040441421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 111040441421 its reverse (124144040111), we get a palindrome (235184481532).

The spelling of 111040441421 in words is "one hundred eleven billion, forty million, four hundred forty-one thousand, four hundred twenty-one".