100112011121091 has 4 divisors (see below), whose sum is σ = 133482681494792. Its totient is φ = 66741340747392.

The previous prime is 100112011121047. The next prime is 100112011121131. The reversal of 100112011121091 is 190121110211001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 100112011121091 - 2⁴³ = 91315918098883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100112011121191) 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, 16685335186846 + ... + 16685335186851.

It is an arithmetic number, because the mean of its divisors is an integer number (33370670373698).

Almost surely, 2^{100112011121091} is an apocalyptic number.

100112011121091 is a deficient number, since it is larger than the sum of its proper divisors (33370670373701).

100112011121091 is an equidigital number, since it uses as much as digits as its factorization.

100112011121091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33370670373700.

The product of its (nonzero) digits is 36, while the sum is 21.

Adding to 100112011121091 its reverse (190121110211001), we get a palindrome (290233121332092).

The spelling of 100112011121091 in words is "one hundred trillion, one hundred twelve billion, eleven million, one hundred twenty-one thousand, ninety-one".