100111231133 has 4 divisors (see below), whose sum is σ = 106000127100. Its totient is φ = 94222335168.

The previous prime is 100111231027. The next prime is 100111231141. The reversal of 100111231133 is 331132111001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331132111001 = 10883 ⋅30426547.

It can be written as a sum of positive squares in 2 ways, for example, as 88883285689 + 11227945444 = 298133^2 + 105962^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100111231133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 5888895949 = 100111231133 / (1 + 0 + 0 + 1 + 1 + 1 + 2 + 3 + 1 + 1 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111231163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2944447958 + ... + 2944447991.

It is an arithmetic number, because the mean of its divisors is an integer number (26500031775).

Almost surely, 2^100111231133 is an apocalyptic number.

It is an amenable number.

100111231133 is a deficient number, since it is larger than the sum of its proper divisors (5888895967).

100111231133 is an equidigital number, since it uses as much as digits as its factorization.

100111231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888895966.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 100111231133 its reverse (331132111001), we get a palindrome (431243342134).

The spelling of 100111231133 in words is "one hundred billion, one hundred eleven million, two hundred thirty-one thousand, one hundred thirty-three".