2221211 has 4 divisors (see below), whose sum is σ = 2233800. Its totient is φ = 2208624.

The previous prime is 2221187. The next prime is 2221217. The reversal of 2221211 is 1121222.

It is a happy number.

2221211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221211 - 2¹⁰ = 2220187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221192 and 2221201.

It is not an unprimeable number, because it can be changed into a prime (2221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6026 + ... + 6383.

It is an arithmetic number, because the mean of its divisors is an integer number (558450).

2^2221211 is an apocalyptic number.

2221211 is a deficient number, since it is larger than the sum of its proper divisors (12589).

2221211 is a wasteful number, since it uses less digits than its factorization.

2221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588.

The product of its digits is 16, while the sum is 11.

The square root of 2221211 is about 1490.3727721614. The cubic root of 2221211 is about 130.4757910300.

Adding to 2221211 its sum of digits (11), we get a palindrome (2221222).

Adding to 2221211 its reverse (1121222), we get a palindrome (3342433).

The spelling of 2221211 in words is "two million, two hundred twenty-one thousand, two hundred eleven".