13211330121 has 20 divisors (see below), whose sum is σ = 21529576464. Its totient is φ = 8006866200.

The previous prime is 13211330057. The next prime is 13211330131. The reversal of 13211330121 is 12103311231.

13211330121 is a `hidden beast` number, since 1 + 3 + 211 + 330 + 121 = 666.

13211330121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13211330121 - 2⁶ = 13211330057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13211330094 and 13211330103.

It is not an unprimeable number, because it can be changed into a prime (13211330131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7412875 + ... + 7414656.

Almost surely, 2^13211330121 is an apocalyptic number.

13211330121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13211330121 is a deficient number, since it is larger than the sum of its proper divisors (8318246343).

13211330121 is a wasteful number, since it uses less digits than its factorization.

13211330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14827554 (or 14827545 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13211330121 its reverse (12103311231), we get a palindrome (25314641352).

The spelling of 13211330121 in words is "thirteen billion, two hundred eleven million, three hundred thirty thousand, one hundred twenty-one".