2212211 has 4 divisors (see below), whose sum is σ = 2220312. Its totient is φ = 2204112.

The previous prime is 2212187. The next prime is 2212219. The reversal of 2212211 is 1122122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1122122 = 2 ⋅561061.

It is a cyclic number.

It is not a de Polignac number, because 2212211 - 2¹⁴ = 2195827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212192 and 2212201.

It is not an unprimeable number, because it can be changed into a prime (2212219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3626 + ... + 4191.

It is an arithmetic number, because the mean of its divisors is an integer number (555078).

2^2212211 is an apocalyptic number.

2212211 is a deficient number, since it is larger than the sum of its proper divisors (8101).

2212211 is an equidigital number, since it uses as much as digits as its factorization.

2212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100.

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

The square root of 2212211 is about 1487.3503286045. The cubic root of 2212211 is about 130.2993299762.

Adding to 2212211 its reverse (1122122), we get a palindrome (3334333).

It can be divided in two parts, 22122 and 11, that multiplied together give a palindrome (243342).

The spelling of 2212211 in words is "two million, two hundred twelve thousand, two hundred eleven".