11222112212 has 12 divisors (see below), whose sum is σ = 19645737300. Its totient is φ = 5609044416.

The previous prime is 11222112211. The next prime is 11222112227. The reversal of 11222112212 is 21221122211.

It can be written as a sum of positive squares in 2 ways, for example, as 8267537476 + 2954574736 = 90926^2 + 54356^2 .

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 (11222112211) 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, 490337 + ... + 512712.

It is an arithmetic number, because the mean of its divisors is an integer number (1637144775).

Almost surely, 2^11222112212 is an apocalyptic number.

It is an amenable number.

11222112212 is a deficient number, since it is larger than the sum of its proper divisors (8423625088).

11222112212 is a wasteful number, since it uses less digits than its factorization.

11222112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005850 (or 1005848 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 11222112212 its reverse (21221122211), we get a palindrome (32443234423).

Subtracting 11222112212 from its reverse (21221122211), we obtain a palindrome (9999009999).

The spelling of 11222112212 in words is "eleven billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twelve".