2002021020323 has 4 divisors (see below), whose sum is σ = 2007013591848. Its totient is φ = 1997028448800.

The previous prime is 2002021020319. The next prime is 2002021020331. The reversal of 2002021020323 is 3230201202002.

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

It is a cyclic number.

It is not a de Polignac number, because 2002021020323 - 2² = 2002021020319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002021020343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2496285161 + ... + 2496285962.

It is an arithmetic number, because the mean of its divisors is an integer number (501753397962).

Almost surely, 2^{2002021020323} is an apocalyptic number.

2002021020323 is a deficient number, since it is larger than the sum of its proper divisors (4992571525).

2002021020323 is an equidigital number, since it uses as much as digits as its factorization.

2002021020323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992571524.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 2002021020323 its reverse (3230201202002), we get a palindrome (5232222222325).

The spelling of 2002021020323 in words is "two trillion, two billion, twenty-one million, twenty thousand, three hundred twenty-three".