20021110303 has 16 divisors (see below), whose sum is σ = 20594237440. Its totient is φ = 19456588800.

The previous prime is 20021110223. The next prime is 20021110349. The reversal of 20021110303 is 30301112002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021110303 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 (20021110363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3908578 + ... + 3913696.

It is an arithmetic number, because the mean of its divisors is an integer number (1287139840).

Almost surely, 2^20021110303 is an apocalyptic number.

20021110303 is a deficient number, since it is larger than the sum of its proper divisors (573127137).

20021110303 is an equidigital number, since it uses as much as digits as its factorization.

20021110303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20021110303 its reverse (30301112002), we get a palindrome (50322222305).

The spelling of 20021110303 in words is "twenty billion, twenty-one million, one hundred ten thousand, three hundred three".