21120326323 has 2 divisors, whose sum is σ = 21120326324. Its totient is φ = 21120326322.

The previous prime is 21120326321. The next prime is 21120326327. The reversal of 21120326323 is 32362302112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21120326323 - 2¹ = 21120326321 is a prime.

Together with 21120326321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21120326321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560163161 + 10560163162.

It is an arithmetic number, because the mean of its divisors is an integer number (10560163162).

Almost surely, 2^21120326323 is an apocalyptic number.

21120326323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120326323 is an equidigital number, since it uses as much as digits as its factorization.

21120326323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21120326323 its reverse (32362302112), we get a palindrome (53482628435).

The spelling of 21120326323 in words is "twenty-one billion, one hundred twenty million, three hundred twenty-six thousand, three hundred twenty-three".