12110000121221 has 2 divisors, whose sum is σ = 12110000121222. Its totient is φ = 12110000121220.

The previous prime is 12110000121179. The next prime is 12110000121299. The reversal of 12110000121221 is 12212100001121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6182533060900 + 5927467060321 = 2486470^2 + 2434639^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110000121221 - 2⁶ = 12110000121157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12110000121196 and 12110000121205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110000121521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055000060610 + 6055000060611.

It is an arithmetic number, because the mean of its divisors is an integer number (6055000060611).

Almost surely, 2^{12110000121221} is an apocalyptic number.

It is an amenable number.

12110000121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110000121221 is an equidigital number, since it uses as much as digits as its factorization.

12110000121221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12110000121221 its reverse (12212100001121), we get a palindrome (24322100122342).

The spelling of 12110000121221 in words is "twelve trillion, one hundred ten billion, one hundred twenty-one thousand, two hundred twenty-one".