12982015021 has 2 divisors, whose sum is σ = 12982015022. Its totient is φ = 12982015020.

The previous prime is 12982015003. The next prime is 12982015063. The reversal of 12982015021 is 12051028921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12908140996 + 73874025 = 113614^2 + 8595^2 .

It is an emirp because it is prime and its reverse (12051028921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12982015021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12982015121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6491007510 + 6491007511.

It is an arithmetic number, because the mean of its divisors is an integer number (6491007511).

Almost surely, 2^12982015021 is an apocalyptic number.

It is an amenable number.

12982015021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12982015021 is an equidigital number, since it uses as much as digits as its factorization.

12982015021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 12982015021 in words is "twelve billion, nine hundred eighty-two million, fifteen thousand, twenty-one".