21002322323 has 2 divisors, whose sum is σ = 21002322324. Its totient is φ = 21002322322.

The previous prime is 21002322259. The next prime is 21002322329. The reversal of 21002322323 is 32322320012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21002322323 - 2⁶ = 21002322259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21002322295 and 21002322304.

It is not a weakly prime, because it can be changed into another prime (21002322329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501161161 + 10501161162.

It is an arithmetic number, because the mean of its divisors is an integer number (10501161162).

Almost surely, 2^21002322323 is an apocalyptic number.

21002322323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002322323 is an equidigital number, since it uses as much as digits as its factorization.

21002322323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21002322323 its reverse (32322320012), we get a palindrome (53324642335).

The spelling of 21002322323 in words is "twenty-one billion, two million, three hundred twenty-two thousand, three hundred twenty-three".