13230320121 has 12 divisors (see below), whose sum is σ = 19111495572. Its totient is φ = 8819736576.

The previous prime is 13230320119. The next prime is 13230320143. The reversal of 13230320121 is 12102303231.

13230320121 is a `hidden beast` number, since 1 + 323 + 0 + 320 + 1 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12113423721 + 1116896400 = 110061^2 + 33420^2 .

It is not a de Polignac number, because 13230320121 - 2¹ = 13230320119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13230320094 and 13230320103.

It is not an unprimeable number, because it can be changed into a prime (13230320321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238585 + ... + 288761.

It is an arithmetic number, because the mean of its divisors is an integer number (1592624631).

Almost surely, 2^13230320121 is an apocalyptic number.

It is an amenable number.

13230320121 is a deficient number, since it is larger than the sum of its proper divisors (5881175451).

13230320121 is a wasteful number, since it uses less digits than its factorization.

13230320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79480 (or 79477 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13230320121 its reverse (12102303231), we get a palindrome (25332623352).

The spelling of 13230320121 in words is "thirteen billion, two hundred thirty million, three hundred twenty thousand, one hundred twenty-one".