20021331002303 has 8 divisors (see below), whose sum is σ = 20096284290816. Its totient is φ = 19946385610200.

The previous prime is 20021331002261. The next prime is 20021331002311. The reversal of 20021331002303 is 30320013312002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021331002303 is a prime.

It is a super-3 number, since 3×20021331002303³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021331002333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131048 + ... + 7060178.

It is an arithmetic number, because the mean of its divisors is an integer number (2512035536352).

Almost surely, 2^{20021331002303} is an apocalyptic number.

20021331002303 is a deficient number, since it is larger than the sum of its proper divisors (74953288513).

20021331002303 is a wasteful number, since it uses less digits than its factorization.

20021331002303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948205.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20021331002303 its reverse (30320013312002), we get a palindrome (50341344314305).

The spelling of 20021331002303 in words is "twenty trillion, twenty-one billion, three hundred thirty-one million, two thousand, three hundred three".