13022861 has 2 divisors, whose sum is σ = 13022862. Its totient is φ = 13022860.

The previous prime is 13022831. The next prime is 13022869. The reversal of 13022861 is 16822031.

13022861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 1394761 = 3410^2 + 1181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13022861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13022869) 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, 6511430 + 6511431.

It is an arithmetic number, because the mean of its divisors is an integer number (6511431).

Almost surely, 2^13022861 is an apocalyptic number.

It is an amenable number.

13022861 is a deficient number, since it is larger than the sum of its proper divisors (1).

13022861 is an equidigital number, since it uses as much as digits as its factorization.

13022861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13022861 is about 3608.7201332328. The cubic root of 13022861 is about 235.2712184737.

Adding to 13022861 its reverse (16822031), we get a palindrome (29844892).

The spelling of 13022861 in words is "thirteen million, twenty-two thousand, eight hundred sixty-one".