111100203231121 has 8 divisors (see below), whose sum is σ = 120253714706664. Its totient is φ = 102033454897920.

The previous prime is 111100203231109. The next prime is 111100203231161. The reversal of 111100203231121 is 121132302001111.

It can be written as a sum of positive squares in 4 ways, for example, as 15543810894096 + 95556392337025 = 3942564^2 + 9775295^2 .

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

It is not a de Polignac number, because 111100203231121 - 2⁹ = 111100203230609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100203231161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21690782920 + ... + 21690788041.

It is an arithmetic number, because the mean of its divisors is an integer number (15031714338333).

Almost surely, 2^{111100203231121} is an apocalyptic number.

It is an amenable number.

111100203231121 is a deficient number, since it is larger than the sum of its proper divisors (9153511475543).

111100203231121 is a wasteful number, since it uses less digits than its factorization.

111100203231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43381571171.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 111100203231121 its reverse (121132302001111), we get a palindrome (232232505232232).

The spelling of 111100203231121 in words is "one hundred eleven trillion, one hundred billion, two hundred three million, two hundred thirty-one thousand, one hundred twenty-one".