11212223 has 12 divisors (see below), whose sum is σ = 12975480. Its totient is φ = 9654480.

The previous prime is 11212219. The next prime is 11212237. The reversal of 11212223 is 32221211.

It is a happy number.

It is not a de Polignac number, because 11212223 - 2² = 11212219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212198 and 11212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140 + ... + 4737.

It is an arithmetic number, because the mean of its divisors is an integer number (1081290).

Almost surely, 2^11212223 is an apocalyptic number.

11212223 is a deficient number, since it is larger than the sum of its proper divisors (1763257).

11212223 is a wasteful number, since it uses less digits than its factorization.

11212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4918 (or 4907 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 11212223 is about 3348.4657680795. The cubic root of 11212223 is about 223.8191501051.

Adding to 11212223 its reverse (32221211), we get a palindrome (43433434).

The spelling of 11212223 in words is "eleven million, two hundred twelve thousand, two hundred twenty-three".