20123300133 has 12 divisors (see below), whose sum is σ = 29114107308. Its totient is φ = 13393786560.

The previous prime is 20123300123. The next prime is 20123300167. The reversal of 20123300133 is 33100332102.

20123300133 is a `hidden beast` number, since 201 + 2 + 330 + 0 + 133 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 264290049 + 19859010084 = 16257^2 + 140922^2 .

It is not a de Polignac number, because 20123300133 - 2⁶ = 20123300069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123300123) 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 11 ways as a sum of consecutive naturals, for example, 1806378 + ... + 1817483.

It is an arithmetic number, because the mean of its divisors is an integer number (2426175609).

Almost surely, 2^20123300133 is an apocalyptic number.

It is an amenable number.

20123300133 is a deficient number, since it is larger than the sum of its proper divisors (8990807175).

20123300133 is a wasteful number, since it uses less digits than its factorization.

20123300133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624484 (or 3624481 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20123300133 its reverse (33100332102), we get a palindrome (53223632235).

The spelling of 20123300133 in words is "twenty billion, one hundred twenty-three million, three hundred thousand, one hundred thirty-three".