2320200021 has 4 divisors (see below), whose sum is σ = 3093600032. Its totient is φ = 1546800012.

The previous prime is 2320200019. The next prime is 2320200037. The reversal of 2320200021 is 1200020232.

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 not a de Polignac number, because 2320200021 - 2¹ = 2320200019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320200221) 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, 386700001 + ... + 386700006.

It is an arithmetic number, because the mean of its divisors is an integer number (773400008).

Almost surely, 2^2320200021 is an apocalyptic number.

It is an amenable number.

2320200021 is a deficient number, since it is larger than the sum of its proper divisors (773400011).

2320200021 is an equidigital number, since it uses as much as digits as its factorization.

2320200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773400010.

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

The square root of 2320200021 is about 48168.4546254081. The cubic root of 2320200021 is about 1323.8592333450.

Adding to 2320200021 its reverse (1200020232), we get a palindrome (3520220253).

The spelling of 2320200021 in words is "two billion, three hundred twenty million, two hundred thousand, twenty-one".