20021023303 has 4 divisors (see below), whose sum is σ = 20064833440. Its totient is φ = 19977213168.

The previous prime is 20021023249. The next prime is 20021023327. The reversal of 20021023303 is 30332012002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30332012002 = 2 ⋅15166006001.

It is a cyclic number.

It is not a de Polignac number, because 20021023303 - 2¹³ = 20021015111 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 (20021023703) 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, 21904383 + ... + 21905296.

It is an arithmetic number, because the mean of its divisors is an integer number (5016208360).

Almost surely, 2^20021023303 is an apocalyptic number.

20021023303 is a deficient number, since it is larger than the sum of its proper divisors (43810137).

20021023303 is an equidigital number, since it uses as much as digits as its factorization.

20021023303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43810136.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20021023303 its reverse (30332012002), we get a palindrome (50353035305).

The spelling of 20021023303 in words is "twenty billion, twenty-one million, twenty-three thousand, three hundred three".