21331312022303 has 4 divisors (see below), whose sum is σ = 21851587925328. Its totient is φ = 20811036119280.

The previous prime is 21331312022201. The next prime is 21331312022311. The reversal of 21331312022303 is 30322021313312.

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

It is a cyclic number.

It is not a de Polignac number, because 21331312022303 - 2¹⁶ = 21331311956767 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 (21331312022903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260137951451 + ... + 260137951532.

It is an arithmetic number, because the mean of its divisors is an integer number (5462896981332).

Almost surely, 2^{21331312022303} is an apocalyptic number.

21331312022303 is a deficient number, since it is larger than the sum of its proper divisors (520275903025).

21331312022303 is an equidigital number, since it uses as much as digits as its factorization.

21331312022303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520275903024.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21331312022303 its reverse (30322021313312), we get a palindrome (51653333335615).

The spelling of 21331312022303 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred twelve million, twenty-two thousand, three hundred three".