100112222121 has 8 divisors (see below), whose sum is σ = 137090610624. Its totient is φ = 64937657520.

The previous prime is 100112222117. The next prime is 100112222123. The reversal of 100112222121 is 121222211001.

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

It is not a de Polignac number, because 100112222121 - 2² = 100112222117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100112222121.

It is not an unprimeable number, because it can be changed into a prime (100112222123) 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, 450955845 + ... + 450956066.

It is an arithmetic number, because the mean of its divisors is an integer number (17136326328).

Almost surely, 2^100112222121 is an apocalyptic number.

It is an amenable number.

100112222121 is a deficient number, since it is larger than the sum of its proper divisors (36978388503).

100112222121 is an equidigital number, since it uses as much as digits as its factorization.

100112222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901911951.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100112222121 its reverse (121222211001), we get a palindrome (221334433122).

The spelling of 100112222121 in words is "one hundred billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".