12210312121323 has 4 divisors (see below), whose sum is σ = 16280416161768. Its totient is φ = 8140208080880.

The previous prime is 12210312121291. The next prime is 12210312121409. The reversal of 12210312121323 is 32312121301221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12210312121323 - 2⁵ = 12210312121291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210312121293 and 12210312121302.

It is not an unprimeable number, because it can be changed into a prime (12210312121523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035052020218 + ... + 2035052020223.

It is an arithmetic number, because the mean of its divisors is an integer number (4070104040442).

Almost surely, 2^{12210312121323} is an apocalyptic number.

12210312121323 is a deficient number, since it is larger than the sum of its proper divisors (4070104040445).

12210312121323 is an equidigital number, since it uses as much as digits as its factorization.

12210312121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070104040444.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 12210312121323 its reverse (32312121301221), we get a palindrome (44522433422544).

The spelling of 12210312121323 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, one hundred twenty-one thousand, three hundred twenty-three".