2121226 has 16 divisors (see below), whose sum is σ = 3411720. Its totient is φ = 985600.

The previous prime is 2121199. The next prime is 2121239. The reversal of 2121226 is 6221212.

It can be written as a sum of positive squares in 4 ways, for example, as 2030625 + 90601 = 1425^2 + 301^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2676 + ... + 3376.

2^2121226 is an apocalyptic number.

2121226 is a deficient number, since it is larger than the sum of its proper divisors (1290494).

2121226 is a wasteful number, since it uses less digits than its factorization.

2121226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its digits is 96, while the sum is 16.

The square root of 2121226 is about 1456.4429271345. The cubic root of 2121226 is about 128.4879244962.

Adding to 2121226 its reverse (6221212), we get a palindrome (8342438).

The spelling of 2121226 in words is "two million, one hundred twenty-one thousand, two hundred twenty-six".