20021013333 has 12 divisors (see below), whose sum is σ = 29113332300. Its totient is φ = 13257761856.

The previous prime is 20021013319. The next prime is 20021013349. The reversal of 20021013333 is 33331012002.

It can be written as a sum of positive squares in 2 ways, for example, as 5760354609 + 14260658724 = 75897^2 + 119418^2 .

It is not a de Polignac number, because 20021013333 - 2¹⁴ = 20020996949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021013833) 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 11 ways as a sum of consecutive naturals, for example, 7463616 + ... + 7466297.

It is an arithmetic number, because the mean of its divisors is an integer number (2426111025).

Almost surely, 2^20021013333 is an apocalyptic number.

It is an amenable number.

20021013333 is a deficient number, since it is larger than the sum of its proper divisors (9092318967).

20021013333 is a wasteful number, since it uses less digits than its factorization.

20021013333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14930068 (or 14930065 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20021013333 its reverse (33331012002), we get a palindrome (53352025335).

The spelling of 20021013333 in words is "twenty billion, twenty-one million, thirteen thousand, three hundred thirty-three".