20020221323203 has 4 divisors (see below), whose sum is σ = 20020942047240. Its totient is φ = 20019500599168.

The previous prime is 20020221323197. The next prime is 20020221323281. The reversal of 20020221323203 is 30232312202002.

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 20020221323203 - 2¹³ = 20020221315011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020221323803) 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, 360320350 + ... + 360375907.

It is an arithmetic number, because the mean of its divisors is an integer number (5005235511810).

Almost surely, 2^{20020221323203} is an apocalyptic number.

20020221323203 is a deficient number, since it is larger than the sum of its proper divisors (720724037).

20020221323203 is an equidigital number, since it uses as much as digits as its factorization.

20020221323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720724036.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20020221323203 its reverse (30232312202002), we get a palindrome (50252533525205).

The spelling of 20020221323203 in words is "twenty trillion, twenty billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred three".