100005215 has 8 divisors (see below), whose sum is σ = 120670368. Its totient is φ = 79561440.

The previous prime is 100005197. The next prime is 100005239. The reversal of 100005215 is 512500001.

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

It is not a de Polignac number, because 100005215 - 2¹² = 100001119 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 100005215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54347 + ... + 56156.

It is an arithmetic number, because the mean of its divisors is an integer number (15083796).

Almost surely, 2^100005215 is an apocalyptic number.

100005215 is a deficient number, since it is larger than the sum of its proper divisors (20665153).

100005215 is a wasteful number, since it uses less digits than its factorization.

100005215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110689.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 100005215 is about 10000.2607466006. The cubic root of 100005215 is about 464.1669518496.

Adding to 100005215 its reverse (512500001), we get a palindrome (612505216).

The spelling of 100005215 in words is "one hundred million, five thousand, two hundred fifteen".