12102221021212 has 12 divisors (see below), whose sum is σ = 24204442042480. Its totient is φ = 5186666151936.

The previous prime is 12102221021197. The next prime is 12102221021239. The reversal of 12102221021212 is 21212012220121.

12102221021212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12102221021212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216111089637 + ... + 216111089692.

Almost surely, 2^{12102221021212} is an apocalyptic number.

It is an amenable number.

12102221021212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12102221021212 is a wasteful number, since it uses less digits than its factorization.

12102221021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432222179340 (or 432222179338 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12102221021212 its reverse (21212012220121), we get a palindrome (33314233241333).

The spelling of 12102221021212 in words is "twelve trillion, one hundred two billion, two hundred twenty-one million, twenty-one thousand, two hundred twelve".