12110121212 has 24 divisors (see below), whose sum is σ = 24232543104. Its totient is φ = 5187416112.

The previous prime is 12110121193. The next prime is 12110121227. The reversal of 12110121212 is 21212101121.

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

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, 53198 + ... + 164469.

It is an arithmetic number, because the mean of its divisors is an integer number (1009689296).

Almost surely, 2^12110121212 is an apocalyptic number.

It is an amenable number.

12110121212 is an abundant number, since it is smaller than the sum of its proper divisors (12122421892).

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

12110121212 is a wasteful number, since it uses less digits than its factorization.

12110121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219665 (or 219663 counting only the distinct ones).

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

Adding to 12110121212 its reverse (21212101121), we get a palindrome (33322222333).

The spelling of 12110121212 in words is "twelve billion, one hundred ten million, one hundred twenty-one thousand, two hundred twelve".