20023033021 has 8 divisors (see below), whose sum is σ = 20701202688. Its totient is φ = 19346880000.

The previous prime is 20023032989. The next prime is 20023033031. The reversal of 20023033021 is 12033032002.

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 20023033021 - 2⁵ = 20023032989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20023032986 and 20023033004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023033031) 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, 483955 + ... + 523696.

It is an arithmetic number, because the mean of its divisors is an integer number (2587650336).

Almost surely, 2^20023033021 is an apocalyptic number.

It is an amenable number.

20023033021 is a deficient number, since it is larger than the sum of its proper divisors (678169667).

20023033021 is a wasteful number, since it uses less digits than its factorization.

20023033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008323.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20023033021 its reverse (12033032002), we get a palindrome (32056065023).

The spelling of 20023033021 in words is "twenty billion, twenty-three million, thirty-three thousand, twenty-one".