12324234021 has 16 divisors (see below), whose sum is σ = 17933313600. Its totient is φ = 7466251520.

The previous prime is 12324234011. The next prime is 12324234029. The reversal of 12324234021 is 12043242321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12324234021 - 2⁵ = 12324233989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12324233982 and 12324234000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12324234029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10861 + ... + 157373.

It is an arithmetic number, because the mean of its divisors is an integer number (1120832100).

Almost surely, 2^12324234021 is an apocalyptic number.

12324234021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12324234021 is a deficient number, since it is larger than the sum of its proper divisors (5609079579).

12324234021 is a wasteful number, since it uses less digits than its factorization.

12324234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149076.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12324234021 its reverse (12043242321), we get a palindrome (24367476342).

The spelling of 12324234021 in words is "twelve billion, three hundred twenty-four million, two hundred thirty-four thousand, twenty-one".