111140021005 has 8 divisors (see below), whose sum is σ = 143627104152. Its totient is φ = 82072630848.

The previous prime is 111140020963. The next prime is 111140021023. The reversal of 111140021005 is 500120041111.

It can be written as a sum of positive squares in 4 ways, for example, as 18062553609 + 93077467396 = 134397^2 + 305086^2 .

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

It is not a de Polignac number, because 111140021005 - 2¹⁹ = 111139496717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111140021005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 854923174 + ... + 854923303.

It is an arithmetic number, because the mean of its divisors is an integer number (17953388019).

Almost surely, 2^111140021005 is an apocalyptic number.

It is an amenable number.

111140021005 is a deficient number, since it is larger than the sum of its proper divisors (32487083147).

111140021005 is a wasteful number, since it uses less digits than its factorization.

111140021005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709846495.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 111140021005 its reverse (500120041111), we get a palindrome (611260062116).

The spelling of 111140021005 in words is "one hundred eleven billion, one hundred forty million, twenty-one thousand, five".