20331210221303 has 4 divisors (see below), whose sum is σ = 20335771861440. Its totient is φ = 20326648581168.

The previous prime is 20331210221251. The next prime is 20331210221347. The reversal of 20331210221303 is 30312201213302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331210221303 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 (20336210221303) 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, 2280813383 + ... + 2280822296.

It is an arithmetic number, because the mean of its divisors is an integer number (5083942965360).

Almost surely, 2^{20331210221303} is an apocalyptic number.

20331210221303 is a deficient number, since it is larger than the sum of its proper divisors (4561640137).

20331210221303 is an equidigital number, since it uses as much as digits as its factorization.

20331210221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561640136.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20331210221303 its reverse (30312201213302), we get a palindrome (50643411434605).

The spelling of 20331210221303 in words is "twenty trillion, three hundred thirty-one billion, two hundred ten million, two hundred twenty-one thousand, three hundred three".