12122020202081 has 2 divisors, whose sum is σ = 12122020202082. Its totient is φ = 12122020202080.

The previous prime is 12122020202069. The next prime is 12122020202143. The reversal of 12122020202081 is 18020202022121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12058221525025 + 63798677056 = 3472495^2 + 252584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122020202081 is a prime.

It is a super-2 number, since 2×12122020202081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12122020202581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061010101040 + 6061010101041.

It is an arithmetic number, because the mean of its divisors is an integer number (6061010101041).

Almost surely, 2^{12122020202081} is an apocalyptic number.

It is an amenable number.

12122020202081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122020202081 is an equidigital number, since it uses as much as digits as its factorization.

12122020202081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 12122020202081 in words is "twelve trillion, one hundred twenty-two billion, twenty million, two hundred two thousand, eighty-one".