100315121 has 8 divisors (see below), whose sum is σ = 105131520. Its totient is φ = 95536672.

The previous prime is 100315109. The next prime is 100315139. The reversal of 100315121 is 121513001.

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

It is a cyclic number.

It is not a de Polignac number, because 100315121 - 2⁶ = 100315057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100315096 and 100315105.

It is not an unprimeable number, because it can be changed into a prime (100318121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001 + ... + 14718.

It is an arithmetic number, because the mean of its divisors is an integer number (13141440).

Almost surely, 2^100315121 is an apocalyptic number.

It is an amenable number.

100315121 is a deficient number, since it is larger than the sum of its proper divisors (4816399).

100315121 is a wasteful number, since it uses less digits than its factorization.

100315121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18975.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 100315121 is about 10015.7436568634. The cubic root of 100315121 is about 464.6459261659.

Adding to 100315121 its reverse (121513001), we get a palindrome (221828122).

The spelling of 100315121 in words is "one hundred million, three hundred fifteen thousand, one hundred twenty-one".