20221233021 has 12 divisors (see below), whose sum is σ = 31863761280. Its totient is φ = 12255292680.

The previous prime is 20221232963. The next prime is 20221233023. The reversal of 20221233021 is 12033212202.

It is not a de Polignac number, because 20221233021 - 2¹⁰ = 20221231997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20221232985 and 20221233003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221233023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102127341 + ... + 102127538.

It is an arithmetic number, because the mean of its divisors is an integer number (2655313440).

Almost surely, 2^20221233021 is an apocalyptic number.

It is an amenable number.

20221233021 is a deficient number, since it is larger than the sum of its proper divisors (11642528259).

20221233021 is a wasteful number, since it uses less digits than its factorization.

20221233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204254896 (or 204254893 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20221233021 its reverse (12033212202), we get a palindrome (32254445223).

The spelling of 20221233021 in words is "twenty billion, two hundred twenty-one million, two hundred thirty-three thousand, twenty-one".