11212112212 has 24 divisors (see below), whose sum is σ = 22646252160. Its totient is φ = 4757613600.

The previous prime is 11212112207. The next prime is 11212112231. The reversal of 11212112212 is 21221121211.

It is a super-2 number, since 2×11212112212² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1979512 + ... + 1985167.

It is an arithmetic number, because the mean of its divisors is an integer number (943593840).

Almost surely, 2^11212112212 is an apocalyptic number.

It is an amenable number.

11212112212 is an abundant number, since it is smaller than the sum of its proper divisors (11434139948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11212112212 is a wasteful number, since it uses less digits than its factorization.

11212112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964791 (or 3964789 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

Adding to 11212112212 its reverse (21221121211), we get a palindrome (32433233423).

The spelling of 11212112212 in words is "eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".