20201123133 has 24 divisors (see below), whose sum is σ = 31218701280. Its totient is φ = 12549440160.

The previous prime is 20201123099. The next prime is 20201123143. The reversal of 20201123133 is 33132110202.

It is not a de Polignac number, because 20201123133 - 2¹⁷ = 20200992061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201123143) 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 23 ways as a sum of consecutive naturals, for example, 957891 + ... + 978752.

It is an arithmetic number, because the mean of its divisors is an integer number (1300779220).

Almost surely, 2^20201123133 is an apocalyptic number.

It is an amenable number.

20201123133 is a deficient number, since it is larger than the sum of its proper divisors (11017578147).

20201123133 is a wasteful number, since it uses less digits than its factorization.

20201123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936729 (or 1936726 counting only the distinct ones).

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

Adding to 20201123133 its reverse (33132110202), we get a palindrome (53333233335).

The spelling of 20201123133 in words is "twenty billion, two hundred one million, one hundred twenty-three thousand, one hundred thirty-three".