2002323020221 has 4 divisors (see below), whose sum is σ = 2002528417500. Its totient is φ = 2002117622944.

The previous prime is 2002323020189. The next prime is 2002323020233. The reversal of 2002323020221 is 1220203232002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 885507348196 + 1116815672025 = 941014^2 + 1056795^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002323020221 - 2⁵ = 2002323020189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002323023221) 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, 102684016 + ... + 102703513.

It is an arithmetic number, because the mean of its divisors is an integer number (500632104375).

Almost surely, 2^{2002323020221} is an apocalyptic number.

It is an amenable number.

2002323020221 is a deficient number, since it is larger than the sum of its proper divisors (205397279).

2002323020221 is an equidigital number, since it uses as much as digits as its factorization.

2002323020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205397278.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 2002323020221 its reverse (1220203232002), we get a palindrome (3222526252223).

The spelling of 2002323020221 in words is "two trillion, two billion, three hundred twenty-three million, twenty thousand, two hundred twenty-one".