12212011112 has 128 divisors (see below), whose sum is σ = 27335750400. Its totient is φ = 5007095808.

The previous prime is 12212011087. The next prime is 12212011139. The reversal of 12212011112 is 21111021221.

It is a super-2 number, since 2×12212011112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21924338 + ... + 21924894.

It is an arithmetic number, because the mean of its divisors is an integer number (213560550).

Almost surely, 2^12212011112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13667875200).

12212011112 is an abundant number, since it is smaller than the sum of its proper divisors (15123739288).

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

12212011112 is a wasteful number, since it uses less digits than its factorization.

12212011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12212011112 its reverse (21111021221), we get a palindrome (33323032333).

The spelling of 12212011112 in words is "twelve billion, two hundred twelve million, eleven thousand, one hundred twelve".