12120122000221 has 2 divisors, whose sum is σ = 12120122000222. Its totient is φ = 12120122000220.

The previous prime is 12120122000171. The next prime is 12120122000251. The reversal of 12120122000221 is 12200022102121.

It is a happy number.

12120122000221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9141008028100 + 2979113972121 = 3023410^2 + 1726011^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120122000221 - 2¹³ = 12120121992029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120122000195 and 12120122000204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120122000251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060061000110 + 6060061000111.

It is an arithmetic number, because the mean of its divisors is an integer number (6060061000111).

Almost surely, 2^{12120122000221} is an apocalyptic number.

It is an amenable number.

12120122000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120122000221 is an equidigital number, since it uses as much as digits as its factorization.

12120122000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12120122000221 its reverse (12200022102121), we get a palindrome (24320144102342).

The spelling of 12120122000221 in words is "twelve trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.