2020323021 has 4 divisors (see below), whose sum is σ = 2693764032. Its totient is φ = 1346882012.

The previous prime is 2020323001. The next prime is 2020323031. The reversal of 2020323021 is 1203230202.

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 a cyclic number.

It is not a de Polignac number, because 2020323021 - 2¹⁸ = 2020060877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020323001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336720501 + ... + 336720506.

It is an arithmetic number, because the mean of its divisors is an integer number (673441008).

Almost surely, 2^2020323021 is an apocalyptic number.

It is an amenable number.

2020323021 is a deficient number, since it is larger than the sum of its proper divisors (673441011).

2020323021 is an equidigital number, since it uses as much as digits as its factorization.

2020323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673441010.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2020323021 is about 44948.0035262969. The cubic root of 2020323021 is about 1264.1742429656.

Adding to 2020323021 its reverse (1203230202), we get a palindrome (3223553223).

The spelling of 2020323021 in words is "two billion, twenty million, three hundred twenty-three thousand, twenty-one".