12212101201212 has 144 divisors (see below), whose sum is σ = 33798866276448. Its totient is φ = 3687118479360.

The previous prime is 12212101201207. The next prime is 12212101201259. The reversal of 12212101201212 is 21210210121221.

12212101201212 is a `hidden beast` number, since 1 + 221 + 210 + 1 + 20 + 1 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 607164468 + ... + 607184580.

It is an arithmetic number, because the mean of its divisors is an integer number (234714349142).

Almost surely, 2^{12212101201212} is an apocalyptic number.

12212101201212 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 12212101201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16899433138224).

12212101201212 is an abundant number, since it is smaller than the sum of its proper divisors (21586765075236).

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

12212101201212 is a wasteful number, since it uses less digits than its factorization.

12212101201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25660 (or 25655 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212101201212 its reverse (21210210121221), we get a palindrome (33422311322433).

The spelling of 12212101201212 in words is "twelve trillion, two hundred twelve billion, one hundred one million, two hundred one thousand, two hundred twelve".