12212021201212 has 24 divisors (see below), whose sum is σ = 24424161441120. Its totient is φ = 5233697863680.

The previous prime is 12212021201173. The next prime is 12212021201227. The reversal of 12212021201212 is 21210212021221.

It is a self number, because there is not a number n which added to its sum of digits gives 12212021201212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5494464 + ... + 7390072.

It is an arithmetic number, because the mean of its divisors is an integer number (1017673393380).

Almost surely, 2^{12212021201212} is an apocalyptic number.

It is an amenable number.

12212021201212 is an abundant number, since it is smaller than the sum of its proper divisors (12212140239908).

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

12212021201212 is a wasteful number, since it uses less digits than its factorization.

12212021201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125701 (or 2125699 counting only the distinct ones).

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

Adding to 12212021201212 its reverse (21210212021221), we get a palindrome (33422233222433).

The spelling of 12212021201212 in words is "twelve trillion, two hundred twelve billion, twenty-one million, two hundred one thousand, two hundred twelve".