11212222 has 8 divisors (see below), whose sum is σ = 19220976. Its totient is φ = 4805232.

The previous prime is 11212219. The next prime is 11212237. The reversal of 11212222 is 22221211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400423 + ... + 400450.

It is an arithmetic number, because the mean of its divisors is an integer number (2402622).

Almost surely, 2^11212222 is an apocalyptic number.

11212222 is a deficient number, since it is larger than the sum of its proper divisors (8008754).

11212222 is an equidigital number, since it uses as much as digits as its factorization.

11212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800882.

The product of its digits is 32, while the sum is 13.

The square root of 11212222 is about 3348.4656187573. The cubic root of 11212222 is about 223.8191434511.

Adding to 11212222 its reverse (22221211), we get a palindrome (33433433).

The spelling of 11212222 in words is "eleven million, two hundred twelve thousand, two hundred twenty-two".