11222212 has 12 divisors (see below), whose sum is σ = 19724796. Its totient is φ = 5586560.

The previous prime is 11222209. The next prime is 11222219. The reversal of 11222212 is 21222211.

It is a happy number.

11222212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4596736 + 6625476 = 2144^2 + 2574^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11222192 and 11222201.

It is not an unprimeable number, because it can be changed into a prime (11222219) 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, 5089 + ... + 6952.

It is an arithmetic number, because the mean of its divisors is an integer number (1643733).

Almost surely, 2^11222212 is an apocalyptic number.

It is an amenable number.

11222212 is a deficient number, since it is larger than the sum of its proper divisors (8502584).

11222212 is a wasteful number, since it uses less digits than its factorization.

11222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12278 (or 12276 counting only the distinct ones).

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

The square root of 11222212 is about 3349.9570146496. The cubic root of 11222212 is about 223.8855974064.

Adding to 11222212 its reverse (21222211), we get a palindrome (32444423).

Subtracting 11222212 from its reverse (21222211), we obtain a palindrome (9999999).

The spelling of 11222212 in words is "eleven million, two hundred twenty-two thousand, two hundred twelve".