21312222032323 has 2 divisors, whose sum is σ = 21312222032324. Its totient is φ = 21312222032322.

The previous prime is 21312222032291. The next prime is 21312222032357. The reversal of 21312222032323 is 32323022221312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21312222032323 - 2⁵ = 21312222032291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21312222032291 and 21312222032300.

It is not a weakly prime, because it can be changed into another prime (21312222432323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656111016161 + 10656111016162.

It is an arithmetic number, because the mean of its divisors is an integer number (10656111016162).

Almost surely, 2^{21312222032323} is an apocalyptic number.

21312222032323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21312222032323 is an equidigital number, since it uses as much as digits as its factorization.

21312222032323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21312222032323 its reverse (32323022221312), we get a palindrome (53635244253635).

The spelling of 21312222032323 in words is "twenty-one trillion, three hundred twelve billion, two hundred twenty-two million, thirty-two thousand, three hundred twenty-three".