100215516 has 12 divisors (see below), whose sum is σ = 233836232. Its totient is φ = 33405168.

The previous prime is 100215509. The next prime is 100215517. The reversal of 100215516 is 615512001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 100215492 and 100215501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100215517) 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, 4175635 + ... + 4175658.

Almost surely, 2^100215516 is an apocalyptic number.

It is an amenable number.

100215516 is an abundant number, since it is smaller than the sum of its proper divisors (133620716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100215516 is a wasteful number, since it uses less digits than its factorization.

100215516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351300 (or 8351298 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 100215516 is about 10010.7700003546. The cubic root of 100215516 is about 464.4920896579.

Adding to 100215516 its reverse (615512001), we get a palindrome (715727517).

The spelling of 100215516 in words is "one hundred million, two hundred fifteen thousand, five hundred sixteen".