12122213341212 has 216 divisors, whose sum is σ = 33512771139120. Its totient is φ = 3672755251200.

The previous prime is 12122213341171. The next prime is 12122213341363. The reversal of 12122213341212 is 21214331222121.

12122213341212 is a `hidden beast` number, since 1 + 2 + 1 + 22 + 213 + 3 + 412 + 12 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2191682887 + ... + 2191688417.

Almost surely, 2^{12122213341212} is an apocalyptic number.

12122213341212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122213341212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16756385569560).

12122213341212 is an abundant number, since it is smaller than the sum of its proper divisors (21390557797908).

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

12122213341212 is a wasteful number, since it uses less digits than its factorization.

12122213341212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625 (or 6549 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 12122213341212 its reverse (21214331222121), we get a palindrome (33336544563333).

The spelling of 12122213341212 in words is "twelve trillion, one hundred twenty-two billion, two hundred thirteen million, three hundred forty-one thousand, two hundred twelve".