12997081 has 2 divisors, whose sum is σ = 12997082. Its totient is φ = 12997080.

The previous prime is 12997069. The next prime is 12997097. The reversal of 12997081 is 18079921.

12997081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12187081 + 810000 = 3491^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 12997081 - 2¹¹ = 12995033 is a prime.

It is a super-2 number, since 2×12997081² = 337848229041122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12997081.

It is not a weakly prime, because it can be changed into another prime (12997181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6498540 + 6498541.

It is an arithmetic number, because the mean of its divisors is an integer number (6498541).

Almost surely, 2^12997081 is an apocalyptic number.

It is an amenable number.

12997081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12997081 is an equidigital number, since it uses as much as digits as its factorization.

12997081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 12997081 is about 3605.1464602704. The cubic root of 12997081 is about 235.1158686189.

The spelling of 12997081 in words is "twelve million, nine hundred ninety-seven thousand, eighty-one".