100121117 has 4 divisors (see below), whose sum is σ = 100229820. Its totient is φ = 100012416.

The previous prime is 100121111. The next prime is 100121123. The reversal of 100121117 is 711121001.

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

It is an interprime number because it is at equal distance from previous prime (100121111) and next prime (100121123).

It can be written as a sum of positive squares in 2 ways, for example, as 3511876 + 96609241 = 1874^2 + 9829^2 .

It is a cyclic number.

It is not a de Polignac number, because 100121117 - 2¹⁴ = 100104733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121111) 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, 52958 + ... + 54815.

It is an arithmetic number, because the mean of its divisors is an integer number (25057455).

Almost surely, 2^100121117 is an apocalyptic number.

It is an amenable number.

100121117 is a deficient number, since it is larger than the sum of its proper divisors (108703).

100121117 is an equidigital number, since it uses as much as digits as its factorization.

100121117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108702.

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

The square root of 100121117 is about 10006.0540174436. The cubic root of 100121117 is about 464.3461995293.

Adding to 100121117 its reverse (711121001), we get a palindrome (811242118).

The spelling of 100121117 in words is "one hundred million, one hundred twenty-one thousand, one hundred seventeen".