21023210003347 has 2 divisors, whose sum is σ = 21023210003348. Its totient is φ = 21023210003346.

The previous prime is 21023210003291. The next prime is 21023210003357. The reversal of 21023210003347 is 74330001232012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21023210003347 is a prime.

It is not a weakly prime, because it can be changed into another prime (21023210003357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511605001673 + 10511605001674.

It is an arithmetic number, because the mean of its divisors is an integer number (10511605001674).

Almost surely, 2^{21023210003347} is an apocalyptic number.

21023210003347 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023210003347 is an equidigital number, since it uses as much as digits as its factorization.

21023210003347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 21023210003347 its reverse (74330001232012), we get a palindrome (95353211235359).

The spelling of 21023210003347 in words is "twenty-one trillion, twenty-three billion, two hundred ten million, three thousand, three hundred forty-seven".