12021323323 has 4 divisors (see below), whose sum is σ = 12190637808. Its totient is φ = 11852008840.

The previous prime is 12021323317. The next prime is 12021323341. The reversal of 12021323323 is 32332312021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32332312021 = 173 ⋅186891977.

It is a cyclic number.

It is not a de Polignac number, because 12021323323 - 2⁵ = 12021323291 is a prime.

It is a super-2 number, since 2×12021323323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021323294 and 12021323303.

It is not an unprimeable number, because it can be changed into a prime (12021327323) 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, 84657136 + ... + 84657277.

It is an arithmetic number, because the mean of its divisors is an integer number (3047659452).

Almost surely, 2^12021323323 is an apocalyptic number.

12021323323 is a deficient number, since it is larger than the sum of its proper divisors (169314485).

12021323323 is an equidigital number, since it uses as much as digits as its factorization.

12021323323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169314484.

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

Adding to 12021323323 its reverse (32332312021), we get a palindrome (44353635344).

The spelling of 12021323323 in words is "twelve billion, twenty-one million, three hundred twenty-three thousand, three hundred twenty-three".