12200121212 has 24 divisors (see below), whose sum is σ = 21896840112. Its totient is φ = 5944233600.

The previous prime is 12200121191. The next prime is 12200121221. The reversal of 12200121212 is 21212100221.

12200121212 is a modest number, since divided by 121212 gives 12200 as remainder.

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, 96287 + ... + 183497.

It is an arithmetic number, because the mean of its divisors is an integer number (912368338).

Almost surely, 2^12200121212 is an apocalyptic number.

It is an amenable number.

12200121212 is a deficient number, since it is larger than the sum of its proper divisors (9696718900).

12200121212 is a wasteful number, since it uses less digits than its factorization.

12200121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88109 (or 88107 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12200121212 its reverse (21212100221), we get a palindrome (33412221433).

The spelling of 12200121212 in words is "twelve billion, two hundred million, one hundred twenty-one thousand, two hundred twelve".