12221022112212 has 24 divisors (see below), whose sum is σ = 28534946704096. Its totient is φ = 4070927117088.

The previous prime is 12221022112141. The next prime is 12221022112231. The reversal of 12221022112212 is 21221122012221.

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, 343346503 + ... + 343382094.

Almost surely, 2^{12221022112212} is an apocalyptic number.

12221022112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221022112212 is an abundant number, since it is smaller than the sum of its proper divisors (16313924591884).

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

12221022112212 is a wasteful number, since it uses less digits than its factorization.

12221022112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686730087 (or 686730085 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12221022112212 its reverse (21221122012221), we get a palindrome (33442144124433).

Subtracting 12221022112212 from its reverse (21221122012221), we obtain a palindrome (9000099900009).

The spelling of 12221022112212 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, one hundred twelve thousand, two hundred twelve".