13355479506121 has 2 divisors, whose sum is σ = 13355479506122. Its totient is φ = 13355479506120.

The previous prime is 13355479506071. The next prime is 13355479506151. The reversal of 13355479506121 is 12160597455331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11175722546121 + 2179756960000 = 3343011^2 + 1476400^2 .

It is a cyclic number.

It is not a de Polignac number, because 13355479506121 - 2¹⁹ = 13355478981833 is a prime.

It is not a weakly prime, because it can be changed into another prime (13355479506151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6677739753060 + 6677739753061.

It is an arithmetic number, because the mean of its divisors is an integer number (6677739753061).

Almost surely, 2^{13355479506121} is an apocalyptic number.

It is an amenable number.

13355479506121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13355479506121 is an equidigital number, since it uses as much as digits as its factorization.

13355479506121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 13355479506121 in words is "thirteen trillion, three hundred fifty-five billion, four hundred seventy-nine million, five hundred six thousand, one hundred twenty-one".