20232021 has 4 divisors (see below), whose sum is σ = 26976032. Its totient is φ = 13488012.

The previous prime is 20232013. The next prime is 20232029. The reversal of 20232021 is 12023202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20232013) and next prime (20232029).

It is not a de Polignac number, because 20232021 - 2³ = 20232013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20231988 and 20232006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3372001 + ... + 3372006.

It is an arithmetic number, because the mean of its divisors is an integer number (6744008).

Almost surely, 2^20232021 is an apocalyptic number.

It is an amenable number.

20232021 is a deficient number, since it is larger than the sum of its proper divisors (6744011).

20232021 is an equidigital number, since it uses as much as digits as its factorization.

20232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6744010.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20232021 is about 4498.0018897284. The cubic root of 20232021 is about 272.4873983455.

Adding to 20232021 its reverse (12023202), we get a palindrome (32255223).

It can be divided in two parts, 202 and 32021, that added together give a palindrome (32223).

The spelling of 20232021 in words is "twenty million, two hundred thirty-two thousand, twenty-one".