21233120323 has 2 divisors, whose sum is σ = 21233120324. Its totient is φ = 21233120322.

The previous prime is 21233120291. The next prime is 21233120333. The reversal of 21233120323 is 32302133212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21233120323 - 2⁵ = 21233120291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21233120294 and 21233120303.

It is not a weakly prime, because it can be changed into another prime (21233120333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616560161 + 10616560162.

It is an arithmetic number, because the mean of its divisors is an integer number (10616560162).

Almost surely, 2^21233120323 is an apocalyptic number.

21233120323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233120323 is an equidigital number, since it uses as much as digits as its factorization.

21233120323 is an evil number, because the sum of its binary digits is even.

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

Adding to 21233120323 its reverse (32302133212), we get a palindrome (53535253535).

The spelling of 21233120323 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty thousand, three hundred twenty-three".