12012121222081 has 2 divisors, whose sum is σ = 12012121222082. Its totient is φ = 12012121222080.

The previous prime is 12012121222063. The next prime is 12012121222117. The reversal of 12012121222081 is 18022212121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11600972240400 + 411148981681 = 3406020^2 + 641209^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012121222081 - 2⁴³ = 3216028199873 is a prime.

It is a super-2 number, since 2×12012121222081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12012121220081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006060611040 + 6006060611041.

It is an arithmetic number, because the mean of its divisors is an integer number (6006060611041).

Almost surely, 2^{12012121222081} is an apocalyptic number.

It is an amenable number.

12012121222081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012121222081 is an equidigital number, since it uses as much as digits as its factorization.

12012121222081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 12012121222081 in words is "twelve trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, eighty-one".