21010332323 has 2 divisors, whose sum is σ = 21010332324. Its totient is φ = 21010332322.

The previous prime is 21010332319. The next prime is 21010332359. The reversal of 21010332323 is 32323301012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21010332323 - 2² = 21010332319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21010332295 and 21010332304.

It is not a weakly prime, because it can be changed into another prime (21010332313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505166161 + 10505166162.

It is an arithmetic number, because the mean of its divisors is an integer number (10505166162).

Almost surely, 2^21010332323 is an apocalyptic number.

21010332323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010332323 is an equidigital number, since it uses as much as digits as its factorization.

21010332323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21010332323 its reverse (32323301012), we get a palindrome (53333633335).

The spelling of 21010332323 in words is "twenty-one billion, ten million, three hundred thirty-two thousand, three hundred twenty-three".