12100000222221 has 16 divisors (see below), whose sum is σ = 17441441764800. Its totient is φ = 7435562012928.

The previous prime is 12100000222207. The next prime is 12100000222243. The reversal of 12100000222221 is 12222200000121.

It is not a de Polignac number, because 12100000222221 - 2⁶ = 12100000222157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100000222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100000220221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2868656076 + ... + 2868660293.

It is an arithmetic number, because the mean of its divisors is an integer number (1090090110300).

Almost surely, 2^{12100000222221} is an apocalyptic number.

It is an amenable number.

12100000222221 is a deficient number, since it is larger than the sum of its proper divisors (5341441542579).

12100000222221 is a wasteful number, since it uses less digits than its factorization.

12100000222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737316428.

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

Adding to 12100000222221 its reverse (12222200000121), we get a palindrome (24322200222342).

The spelling of 12100000222221 in words is "twelve trillion, one hundred billion, two hundred twenty-two thousand, two hundred twenty-one".