13124421061 has 2 divisors, whose sum is σ = 13124421062. Its totient is φ = 13124421060.

The previous prime is 13124421029. The next prime is 13124421077. The reversal of 13124421061 is 16012442131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8759836836 + 4364584225 = 93594^2 + 66065^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124421061 - 2⁵ = 13124421029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13124421001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562210530 + 6562210531.

It is an arithmetic number, because the mean of its divisors is an integer number (6562210531).

Almost surely, 2^13124421061 is an apocalyptic number.

It is an amenable number.

13124421061 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124421061 is an equidigital number, since it uses as much as digits as its factorization.

13124421061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 13124421061 its reverse (16012442131), we get a palindrome (29136863192).

The spelling of 13124421061 in words is "thirteen billion, one hundred twenty-four million, four hundred twenty-one thousand, sixty-one".