12000211221222 has 48 divisors (see below), whose sum is σ = 30517911688992. Its totient is φ = 3335966052480.

The previous prime is 12000211221143. The next prime is 12000211221227. The reversal of 12000211221222 is 22212211200021.

It is a happy number.

12000211221222 is a `hidden beast` number, since 1 + 200 + 0 + 21 + 1 + 221 + 222 = 666.

12000211221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 12000211221195 and 12000211221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000211221227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1287019279 + ... + 1287028602.

It is an arithmetic number, because the mean of its divisors is an integer number (635789826854).

Almost surely, 2^{12000211221222} is an apocalyptic number.

12000211221222 is an abundant number, since it is smaller than the sum of its proper divisors (18517700467770).

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

12000211221222 is a wasteful number, since it uses less digits than its factorization.

12000211221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574047933 (or 2574047930 counting only the distinct ones).

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

Adding to 12000211221222 its reverse (22212211200021), we get a palindrome (34212422421243).

The spelling of 12000211221222 in words is "twelve trillion, two hundred eleven million, two hundred twenty-one thousand, two hundred twenty-two".