26560230121 has 2 divisors, whose sum is σ = 26560230122. Its totient is φ = 26560230120.

The previous prime is 26560230119. The next prime is 26560230139. The reversal of 26560230121 is 12103206562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25381269225 + 1178960896 = 159315^2 + 34336^2 .

It is a cyclic number.

It is not a de Polignac number, because 26560230121 - 2¹ = 26560230119 is a prime.

Together with 26560230119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26560230121.

It is not a weakly prime, because it can be changed into another prime (26560630121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13280115060 + 13280115061.

It is an arithmetic number, because the mean of its divisors is an integer number (13280115061).

Almost surely, 2^26560230121 is an apocalyptic number.

It is an amenable number.

26560230121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26560230121 is an equidigital number, since it uses as much as digits as its factorization.

26560230121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 26560230121 its reverse (12103206562), we get a palindrome (38663436683).

The spelling of 26560230121 in words is "twenty-six billion, five hundred sixty million, two hundred thirty thousand, one hundred twenty-one".