100011000121 has 4 divisors (see below), whose sum is σ = 100015787392. Its totient is φ = 100006212852.

The previous prime is 100011000113. The next prime is 100011000127. The reversal of 100011000121 is 121000110001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100011000121 - 2³ = 100011000113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100011000127) 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, 2362161 + ... + 2404126.

It is an arithmetic number, because the mean of its divisors is an integer number (25003946848).

Almost surely, 2^100011000121 is an apocalyptic number.

It is an amenable number.

100011000121 is a deficient number, since it is larger than the sum of its proper divisors (4787271).

100011000121 is an equidigital number, since it uses as much as digits as its factorization.

100011000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4787270.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 100011000121 its reverse (121000110001), we get a palindrome (221011110122).

The spelling of 100011000121 in words is "one hundred billion, eleven million, one hundred twenty-one", and thus it is an aban number.