21033130113 has 48 divisors (see below), whose sum is σ = 31925327616. Its totient is φ = 13836614400.

The previous prime is 21033130057. The next prime is 21033130127. The reversal of 21033130113 is 31103133012.

It is a happy number.

21033130113 is a `hidden beast` number, since 21 + 0 + 331 + 301 + 13 = 666.

It is not a de Polignac number, because 21033130113 - 2⁶ = 21033130049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21033130213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8269720 + ... + 8272262.

It is an arithmetic number, because the mean of its divisors is an integer number (665110992).

Almost surely, 2^21033130113 is an apocalyptic number.

It is an amenable number.

21033130113 is a deficient number, since it is larger than the sum of its proper divisors (10892197503).

21033130113 is a wasteful number, since it uses less digits than its factorization.

21033130113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21033130113 its reverse (31103133012), we get a palindrome (52136263125).

The spelling of 21033130113 in words is "twenty-one billion, thirty-three million, one hundred thirty thousand, one hundred thirteen".