21202030310323 has 2 divisors, whose sum is σ = 21202030310324. Its totient is φ = 21202030310322.

The previous prime is 21202030310291. The next prime is 21202030310339. The reversal of 21202030310323 is 32301303020212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202030310323 - 2⁵ = 21202030310291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202030310294 and 21202030310303.

It is not a weakly prime, because it can be changed into another prime (21202030310353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601015155161 + 10601015155162.

It is an arithmetic number, because the mean of its divisors is an integer number (10601015155162).

Almost surely, 2^{21202030310323} is an apocalyptic number.

21202030310323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202030310323 is an equidigital number, since it uses as much as digits as its factorization.

21202030310323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21202030310323 its reverse (32301303020212), we get a palindrome (53503333330535).

The spelling of 21202030310323 in words is "twenty-one trillion, two hundred two billion, thirty million, three hundred ten thousand, three hundred twenty-three".