20321011012303 has 4 divisors (see below), whose sum is σ = 21516364601280. Its totient is φ = 19125657423328.

The previous prime is 20321011012297. The next prime is 20321011012333. The reversal of 20321011012303 is 30321011012302.

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-20321011012303 is a prime.

It is a super-3 number, since 3×20321011012303³ (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 (20321011012333) 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, 597676794463 + ... + 597676794496.

It is an arithmetic number, because the mean of its divisors is an integer number (5379091150320).

Almost surely, 2^{20321011012303} is an apocalyptic number.

20321011012303 is a deficient number, since it is larger than the sum of its proper divisors (1195353588977).

20321011012303 is a wasteful number, since it uses less digits than its factorization.

20321011012303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195353588976.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20321011012303 its reverse (30321011012302), we get a palindrome (50642022024605).

Subtracting 20321011012303 from its reverse (30321011012302), we obtain a palindrome (9999999999999).

The spelling of 20321011012303 in words is "twenty trillion, three hundred twenty-one billion, eleven million, twelve thousand, three hundred three".