100215105 has 16 divisors (see below), whose sum is σ = 160480320. Its totient is φ = 53402688.

The previous prime is 100215061. The next prime is 100215109. The reversal of 100215105 is 501512001.

It is not a de Polignac number, because 100215105 - 2⁷ = 100214977 is a prime.

It is a super-2 number, since 2×100215105² = 20086134540322050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (100215109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23034 + ... + 27036.

It is an arithmetic number, because the mean of its divisors is an integer number (10030020).

Almost surely, 2^100215105 is an apocalyptic number.

100215105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100215105 is a deficient number, since it is larger than the sum of its proper divisors (60265215).

100215105 is a wasteful number, since it uses less digits than its factorization.

100215105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 100215105 is about 10010.7494724421. The cubic root of 100215105 is about 464.4914546713.

Adding to 100215105 its reverse (501512001), we get a palindrome (601727106).

The spelling of 100215105 in words is "one hundred million, two hundred fifteen thousand, one hundred five".