12212100221222 has 16 divisors (see below), whose sum is σ = 19984960209744. Its totient is φ = 5550531456000.

The previous prime is 12212100221219. The next prime is 12212100221227. The reversal of 12212100221222 is 22212200121221.

12212100221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12212100221194 and 12212100221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212100221227) 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, 20864279 + ... + 21441602.

It is an arithmetic number, because the mean of its divisors is an integer number (1249060013109).

Almost surely, 2^{12212100221222} is an apocalyptic number.

12212100221222 is a deficient number, since it is larger than the sum of its proper divisors (7772859988522).

12212100221222 is a wasteful number, since it uses less digits than its factorization.

12212100221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42319015.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12212100221222 its reverse (22212200121221), we get a palindrome (34424300342443).

The spelling of 12212100221222 in words is "twelve trillion, two hundred twelve billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-two".