12122102221212 has 24 divisors (see below), whose sum is σ = 28285593212800. Its totient is φ = 4040602450416.

The previous prime is 12122102221199. The next prime is 12122102221219. The reversal of 12122102221212 is 21212220122121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122102221219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11771512 + ... + 12759807.

Almost surely, 2^{12122102221212} is an apocalyptic number.

12122102221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12122102221212 is an abundant number, since it is smaller than the sum of its proper divisors (16163490991588).

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

12122102221212 is a wasteful number, since it uses less digits than its factorization.

12122102221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24572505 (or 24572503 counting only the distinct ones).

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

Adding to 12122102221212 its reverse (21212220122121), we get a palindrome (33334322343333).

The spelling of 12122102221212 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, two hundred twenty-one thousand, two hundred twelve".