21030103323323 has 2 divisors, whose sum is σ = 21030103323324. Its totient is φ = 21030103323322.

The previous prime is 21030103323319. The next prime is 21030103323367. The reversal of 21030103323323 is 32332330103012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21030103323323 - 2² = 21030103323319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21030103323292 and 21030103323301.

It is not a weakly prime, because it can be changed into another prime (21030103322323) 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, 10515051661661 + 10515051661662.

It is an arithmetic number, because the mean of its divisors is an integer number (10515051661662).

Almost surely, 2^{21030103323323} is an apocalyptic number.

21030103323323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030103323323 is an equidigital number, since it uses as much as digits as its factorization.

21030103323323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21030103323323 its reverse (32332330103012), we get a palindrome (53362433426335).

The spelling of 21030103323323 in words is "twenty-one trillion, thirty billion, one hundred three million, three hundred twenty-three thousand, three hundred twenty-three".