11223212212 has 24 divisors (see below), whose sum is σ = 19875905280. Its totient is φ = 5544475200.

The previous prime is 11223212179. The next prime is 11223212219. The reversal of 11223212212 is 21221232211.

It is a self number, because there is not a number n which added to its sum of digits gives 11223212212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223212219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505693 + ... + 527419.

It is an arithmetic number, because the mean of its divisors is an integer number (828162720).

Almost surely, 2^11223212212 is an apocalyptic number.

It is an amenable number.

11223212212 is a deficient number, since it is larger than the sum of its proper divisors (8652693068).

11223212212 is a wasteful number, since it uses less digits than its factorization.

11223212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23271 (or 23269 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

Adding to 11223212212 its reverse (21221232211), we get a palindrome (32444444423).

The spelling of 11223212212 in words is "eleven billion, two hundred twenty-three million, two hundred twelve thousand, two hundred twelve".