12901081 has 2 divisors, whose sum is σ = 12901082. Its totient is φ = 12901080.

The previous prime is 12901043. The next prime is 12901093. The reversal of 12901081 is 18010921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 84681 = 3580^2 + 291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12901081 is a prime.

It is a super-2 number, since 2×12901081² = 332875781937122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12901001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6450540 + 6450541.

It is an arithmetic number, because the mean of its divisors is an integer number (6450541).

Almost surely, 2^12901081 is an apocalyptic number.

It is an amenable number.

12901081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12901081 is an equidigital number, since it uses as much as digits as its factorization.

12901081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 12901081 is about 3591.8074837051. The cubic root of 12901081 is about 234.5355607605.

The spelling of 12901081 in words is "twelve million, nine hundred one thousand, eighty-one".