100311230121 has 16 divisors (see below), whose sum is σ = 135148159104. Its totient is φ = 66174441984.

The previous prime is 100311230093. The next prime is 100311230137. The reversal of 100311230121 is 121032113001.

It is a happy number.

It is not a de Polignac number, because 100311230121 - 2¹⁰ = 100311229097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100311230121.

It is not an unprimeable number, because it can be changed into a prime (100311230191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2152756 + ... + 2198858.

It is an arithmetic number, because the mean of its divisors is an integer number (8446759944).

Almost surely, 2^100311230121 is an apocalyptic number.

It is an amenable number.

100311230121 is a deficient number, since it is larger than the sum of its proper divisors (34836928983).

100311230121 is an equidigital number, since it uses as much as digits as its factorization.

100311230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53680.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 100311230121 its reverse (121032113001), we get a palindrome (221343343122).

The spelling of 100311230121 in words is "one hundred billion, three hundred eleven million, two hundred thirty thousand, one hundred twenty-one".