12323112021 has 18 divisors (see below), whose sum is σ = 19565346710. Its totient is φ = 7468552080.

The previous prime is 12323111993. The next prime is 12323112047. The reversal of 12323112021 is 12021132321.

12323112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6970580100 + 5352531921 = 83490^2 + 73161^2 .

It is not a de Polignac number, because 12323112021 - 2⁵ = 12323111989 is a prime.

It is a super-2 number, since 2×12323112021² (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 = 12323111985 and 12323112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323116021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5656906 + ... + 5659083.

Almost surely, 2^12323112021 is an apocalyptic number.

12323112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12323112021 is a deficient number, since it is larger than the sum of its proper divisors (7242234689).

12323112021 is a wasteful number, since it uses less digits than its factorization.

12323112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316017 (or 11316003 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12323112021 its reverse (12021132321), we get a palindrome (24344244342).

The spelling of 12323112021 in words is "twelve billion, three hundred twenty-three million, one hundred twelve thousand, twenty-one".