12202121212 has 24 divisors (see below), whose sum is σ = 22821133104. Its totient is φ = 5688506112.

The previous prime is 12202121209. The next prime is 12202121231. The reversal of 12202121212 is 21212120221.

It is a happy number.

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, 831243 + ... + 845794.

It is an arithmetic number, because the mean of its divisors is an integer number (950880546).

Almost surely, 2^12202121212 is an apocalyptic number.

It is an amenable number.

12202121212 is a deficient number, since it is larger than the sum of its proper divisors (10619011892).

12202121212 is a wasteful number, since it uses less digits than its factorization.

12202121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677165 (or 1677163 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12202121212 its reverse (21212120221), we get a palindrome (33414241433).

Subtracting 12202121212 from its reverse (21212120221), we obtain a palindrome (9009999009).

The spelling of 12202121212 in words is "twelve billion, two hundred two million, one hundred twenty-one thousand, two hundred twelve".