23212121323 has 2 divisors, whose sum is σ = 23212121324. Its totient is φ = 23212121322.

The previous prime is 23212121297. The next prime is 23212121327. The reversal of 23212121323 is 32312121232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23212121323 - 2¹³ = 23212113131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23212121294 and 23212121303.

It is not a weakly prime, because it can be changed into another prime (23212121327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606060661 + 11606060662.

It is an arithmetic number, because the mean of its divisors is an integer number (11606060662).

Almost surely, 2^23212121323 is an apocalyptic number.

23212121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212121323 is an equidigital number, since it uses as much as digits as its factorization.

23212121323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

Adding to 23212121323 its reverse (32312121232), we get a palindrome (55524242555).

Subtracting 23212121323 from its reverse (32312121232), we obtain a palindrome (9099999909).

The spelling of 23212121323 in words is "twenty-three billion, two hundred twelve million, one hundred twenty-one thousand, three hundred twenty-three".