12212012001222 has 160 divisors (see below), whose sum is σ = 30368641564800. Its totient is φ = 3636557683200.

The previous prime is 12212012001221. The next prime is 12212012001223. The reversal of 12212012001222 is 22210021021221.

It is a happy number.

12212012001222 is a `hidden beast` number, since 1 + 221 + 20 + 1 + 200 + 1 + 222 = 666.

12212012001222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12212012001221) and next prime (12212012001223).

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

It is a junction number, because it is equal to n+sod(n) for n = 12212012001195 and 12212012001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212012001221) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 308980822 + ... + 309020342.

It is an arithmetic number, because the mean of its divisors is an integer number (189804009780).

Almost surely, 2^{12212012001222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212012001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15184320782400).

12212012001222 is an abundant number, since it is smaller than the sum of its proper divisors (18156629563578).

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

12212012001222 is a wasteful number, since it uses less digits than its factorization.

12212012001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42544 (or 42535 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12212012001222 its reverse (22210021021221), we get a palindrome (34422033022443).

The spelling of 12212012001222 in words is "twelve trillion, two hundred twelve billion, twelve million, one thousand, two hundred twenty-two".