12400023224 has 8 divisors (see below), whose sum is σ = 23250043560. Its totient is φ = 6200011608.

The previous prime is 12400023221. The next prime is 12400023239. The reversal of 12400023224 is 42232000421.

12400023224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12400023196 and 12400023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400023221) 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 as a sum of consecutive naturals, namely, 775001444 + ... + 775001459.

It is an arithmetic number, because the mean of its divisors is an integer number (2906255445).

Almost surely, 2^12400023224 is an apocalyptic number.

It is an amenable number.

12400023224 is a deficient number, since it is larger than the sum of its proper divisors (10850020336).

12400023224 is a wasteful number, since it uses less digits than its factorization.

12400023224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550002909 (or 1550002905 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12400023224 its reverse (42232000421), we get a palindrome (54632023645).

The spelling of 12400023224 in words is "twelve billion, four hundred million, twenty-three thousand, two hundred twenty-four".