12122102012081 has 2 divisors, whose sum is σ = 12122102012082. Its totient is φ = 12122102012080.

The previous prime is 12122102012077. The next prime is 12122102012173. The reversal of 12122102012081 is 18021020122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9030866419600 + 3091235592481 = 3005140^2 + 1758191^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122102012081 - 2² = 12122102012077 is a prime.

It is a super-2 number, since 2×12122102012081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12122102012281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061051006040 + 6061051006041.

It is an arithmetic number, because the mean of its divisors is an integer number (6061051006041).

Almost surely, 2^{12122102012081} is an apocalyptic number.

It is an amenable number.

12122102012081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122102012081 is an equidigital number, since it uses as much as digits as its factorization.

12122102012081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 12122102012081 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, twelve thousand, eighty-one".