21331321112303 has 2 divisors, whose sum is σ = 21331321112304. Its totient is φ = 21331321112302.

The previous prime is 21331321112239. The next prime is 21331321112357. The reversal of 21331321112303 is 30321112313312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21331321112303 - 2⁶ = 21331321112239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21331321112903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665660556151 + 10665660556152.

It is an arithmetic number, because the mean of its divisors is an integer number (10665660556152).

Almost surely, 2^{21331321112303} is an apocalyptic number.

21331321112303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21331321112303 is an equidigital number, since it uses as much as digits as its factorization.

21331321112303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21331321112303 its reverse (30321112313312), we get a palindrome (51652433425615).

The spelling of 21331321112303 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred twelve thousand, three hundred three".