21331210022293 has 2 divisors, whose sum is σ = 21331210022294. Its totient is φ = 21331210022292.

The previous prime is 21331210022273. The next prime is 21331210022333. The reversal of 21331210022293 is 39222001213312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11812707789444 + 9518502232849 = 3436962^2 + 3085207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21331210022293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21331210022273) 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 as a sum of consecutive naturals, namely, 10665605011146 + 10665605011147.

It is an arithmetic number, because the mean of its divisors is an integer number (10665605011147).

Almost surely, 2^{21331210022293} is an apocalyptic number.

It is an amenable number.

21331210022293 is a deficient number, since it is larger than the sum of its proper divisors (1).

21331210022293 is an equidigital number, since it uses as much as digits as its factorization.

21331210022293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 21331210022293 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred ten million, twenty-two thousand, two hundred ninety-three".