12982015121 has 2 divisors, whose sum is σ = 12982015122. Its totient is φ = 12982015120.

The previous prime is 12982015117. The next prime is 12982015139. The reversal of 12982015121 is 12151028921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10637034496 + 2344980625 = 103136^2 + 48425^2 .

It is an emirp because it is prime and its reverse (12151028921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12982015121 - 2² = 12982015117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12982015021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6491007560 + 6491007561.

It is an arithmetic number, because the mean of its divisors is an integer number (6491007561).

Almost surely, 2^12982015121 is an apocalyptic number.

It is an amenable number.

12982015121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12982015121 is an equidigital number, since it uses as much as digits as its factorization.

12982015121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 12982015121 in words is "twelve billion, nine hundred eighty-two million, fifteen thousand, one hundred twenty-one".