12222100000221 has 16 divisors (see below), whose sum is σ = 16737502894848. Its totient is φ = 7927406452800.

The previous prime is 12222100000157. The next prime is 12222100000277. The reversal of 12222100000221 is 12200000122221.

It is not a de Polignac number, because 12222100000221 - 2⁶ = 12222100000157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12222100000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222100000921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065925 + ... + 5057706.

It is an arithmetic number, because the mean of its divisors is an integer number (1046093930928).

Almost surely, 2^{12222100000221} is an apocalyptic number.

It is an amenable number.

12222100000221 is a deficient number, since it is larger than the sum of its proper divisors (4515402894627).

12222100000221 is a wasteful number, since it uses less digits than its factorization.

12222100000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6141652.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12222100000221 its reverse (12200000122221), we get a palindrome (24422100122442).

It can be divided in two parts, 122 and 22100000221, that multiplied together give a palindrome (2696200026962).

The spelling of 12222100000221 in words is "twelve trillion, two hundred twenty-two billion, one hundred million, two hundred twenty-one", and thus it is an aban number.