2111216 has 20 divisors (see below), whose sum is σ = 4269072. Its totient is φ = 1009536.

The previous prime is 2111189. The next prime is 2111231. The reversal of 2111216 is 6121112.

It is a super-5 number, since 5×2111216⁵ (a number of 33 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2111216.

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, 2501 + ... + 3236.

2^2111216 is an apocalyptic number.

It is an amenable number.

2111216 is an abundant number, since it is smaller than the sum of its proper divisors (2157856).

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

2111216 is a wasteful number, since it uses less digits than its factorization.

2111216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768 (or 5762 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 2111216 is about 1453.0024088074. The cubic root of 2111216 is about 128.2854955600.

Adding to 2111216 its reverse (6121112), we get a palindrome (8232328).

The spelling of 2111216 in words is "two million, one hundred eleven thousand, two hundred sixteen".