100012216 has 8 divisors (see below), whose sum is σ = 187522920. Its totient is φ = 50006104.

The previous prime is 100012189. The next prime is 100012217. The reversal of 100012216 is 612210001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 100012196 and 100012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012217) 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 as a sum of consecutive naturals, namely, 6250756 + ... + 6250771.

It is an arithmetic number, because the mean of its divisors is an integer number (23440365).

Almost surely, 2^100012216 is an apocalyptic number.

It is an amenable number.

100012216 is a deficient number, since it is larger than the sum of its proper divisors (87510704).

100012216 is a wasteful number, since it uses less digits than its factorization.

100012216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12501533 (or 12501529 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 100012216 is about 10000.6107813473. The cubic root of 100012216 is about 464.1777831414.

Adding to 100012216 its reverse (612210001), we get a palindrome (712222217).

The spelling of 100012216 in words is "one hundred million, twelve thousand, two hundred sixteen".