2126216 has 16 divisors (see below), whose sum is σ = 4052940. Its totient is φ = 1045440.

The previous prime is 2126213. The next prime is 2126227. The reversal of 2126216 is 6126212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2114116 + 12100 = 1454^2 + 110^2 .

It is not an unprimeable number, because it can be changed into a prime (2126213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691 + ... + 2666.

2^2126216 is an apocalyptic number.

It is an amenable number.

2126216 is a deficient number, since it is larger than the sum of its proper divisors (1926724).

2126216 is a wasteful number, since it uses less digits than its factorization.

2126216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424 (or 4420 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 2126216 is about 1458.1549986198. The cubic root of 2126216 is about 128.5885978247.

The spelling of 2126216 in words is "two million, one hundred twenty-six thousand, two hundred sixteen".