11212112222212 has 48 divisors (see below), whose sum is σ = 22085730793728. Its totient is φ = 4936557726720.

The previous prime is 11212112222209. The next prime is 11212112222239. The reversal of 11212112222212 is 21222221121211.

It is a super-2 number, since 2×11212112222212² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27746403 + ... + 28147594.

It is an arithmetic number, because the mean of its divisors is an integer number (460119391536).

Almost surely, 2^{11212112222212} is an apocalyptic number.

It is an amenable number.

11212112222212 is a deficient number, since it is larger than the sum of its proper divisors (10873618571516).

11212112222212 is a wasteful number, since it uses less digits than its factorization.

11212112222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55894156 (or 55894154 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 11212112222212 its reverse (21222221121211), we get a palindrome (32434333343423).

The spelling of 11212112222212 in words is "eleven trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twelve".