100122909 has 8 divisors (see below), whose sum is σ = 133546560. Its totient is φ = 66723936.

The previous prime is 100122889. The next prime is 100122917. The reversal of 100122909 is 909221001.

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

It is not a de Polignac number, because 100122909 - 2¹⁵ = 100090141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122929) 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, 7857 + ... + 16185.

It is an arithmetic number, because the mean of its divisors is an integer number (16693320).

Almost surely, 2^100122909 is an apocalyptic number.

It is an amenable number.

100122909 is a deficient number, since it is larger than the sum of its proper divisors (33423651).

100122909 is an equidigital number, since it uses as much as digits as its factorization.

100122909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 100122909 is about 10006.1435628318. The cubic root of 100122909 is about 464.3489698521.

It can be divided in two parts, 10012 and 2909, that added together give a palindrome (12921).

The spelling of 100122909 in words is "one hundred million, one hundred twenty-two thousand, nine hundred nine".