20133112021 has 8 divisors (see below), whose sum is σ = 22176633024. Its totient is φ = 18125130720.

The previous prime is 20133111959. The next prime is 20133112039. The reversal of 20133112021 is 12021133102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20133112021 - 2¹⁹ = 20132587733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20133111986 and 20133112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133112061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8883736 + ... + 8886001.

It is an arithmetic number, because the mean of its divisors is an integer number (2772079128).

Almost surely, 2^20133112021 is an apocalyptic number.

It is an amenable number.

20133112021 is a deficient number, since it is larger than the sum of its proper divisors (2043521003).

20133112021 is a wasteful number, since it uses less digits than its factorization.

20133112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17769851.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20133112021 its reverse (12021133102), we get a palindrome (32154245123).

The spelling of 20133112021 in words is "twenty billion, one hundred thirty-three million, one hundred twelve thousand, twenty-one".