12320024121 has 6 divisors (see below), whose sum is σ = 17795590410. Its totient is φ = 8213349408.

The previous prime is 12320024089. The next prime is 12320024141. The reversal of 12320024121 is 12142002321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11911539600 + 408484521 = 109140^2 + 20211^2 .

It is not a de Polignac number, because 12320024121 - 2⁵ = 12320024089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12320024094 and 12320024103.

It is not an unprimeable number, because it can be changed into a prime (12320024141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684445776 + ... + 684445793.

It is an arithmetic number, because the mean of its divisors is an integer number (2965931735).

Almost surely, 2^12320024121 is an apocalyptic number.

It is an amenable number.

12320024121 is a deficient number, since it is larger than the sum of its proper divisors (5475566289).

12320024121 is a wasteful number, since it uses less digits than its factorization.

12320024121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368891575 (or 1368891572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12320024121 its reverse (12142002321), we get a palindrome (24462026442).

The spelling of 12320024121 in words is "twelve billion, three hundred twenty million, twenty-four thousand, one hundred twenty-one".