12102212112 has 40 divisors (see below), whose sum is σ = 31451278656. Its totient is φ = 4009911936.

The previous prime is 12102212063. The next prime is 12102212119. The reversal of 12102212112 is 21121220121.

It is a junction number, because it is equal to n+sod(n) for n = 12102212091 and 12102212100.

It is not an unprimeable number, because it can be changed into a prime (12102212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746863 + ... + 762894.

Almost surely, 2^12102212112 is an apocalyptic number.

12102212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12102212112 is an abundant number, since it is smaller than the sum of its proper divisors (19349066544).

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

12102212112 is a wasteful number, since it uses less digits than its factorization.

12102212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509935 (or 1509929 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12102212112 its reverse (21121220121), we get a palindrome (33223432233).

The spelling of 12102212112 in words is "twelve billion, one hundred two million, two hundred twelve thousand, one hundred twelve".