2100216 has 16 divisors (see below), whose sum is σ = 5250600. Its totient is φ = 700064.

The previous prime is 2100193. The next prime is 2100221. The reversal of 2100216 is 6120012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43731 + ... + 43778.

2^2100216 is an apocalyptic number.

It is an amenable number.

2100216 is an abundant number, since it is smaller than the sum of its proper divisors (3150384).

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

2100216 is a wasteful number, since it uses less digits than its factorization.

2100216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87518 (or 87514 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2100216 is about 1449.2121997830. The cubic root of 2100216 is about 128.0623069054.

Adding to 2100216 its reverse (6120012), we get a palindrome (8220228).

The spelling of 2100216 in words is "two million, one hundred thousand, two hundred sixteen".