2212222 has 12 divisors (see below), whose sum is σ = 3431808. Its totient is φ = 1069500.

The previous prime is 2212219. The next prime is 2212229. The reversal of 2212222 is 2222122.

2212222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212229) 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 5 ways as a sum of consecutive naturals, for example, 1347 + ... + 2497.

It is an arithmetic number, because the mean of its divisors is an integer number (285984).

2^2212222 is an apocalyptic number.

2212222 is a deficient number, since it is larger than the sum of its proper divisors (1219586).

2212222 is a wasteful number, since it uses less digits than its factorization.

2212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215 (or 1184 counting only the distinct ones).

The product of its digits is 64, while the sum is 13.

The square root of 2212222 is about 1487.3540264510. The cubic root of 2212222 is about 130.2995459426.

Adding to 2212222 its reverse (2222122), we get a palindrome (4434344).

It can be divided in two parts, 22122 and 22, that multiplied together give a palindrome (486684).

The spelling of 2212222 in words is "two million, two hundred twelve thousand, two hundred twenty-two".