12400003012 has 6 divisors (see below), whose sum is σ = 21700005278. Its totient is φ = 6200001504.

The previous prime is 12400002947. The next prime is 12400003043. The reversal of 12400003012 is 21030000421.

It can be written as a sum of positive squares in only one way, i.e., 12370778176 + 29224836 = 111224^2 + 5406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12400002983 and 12400003001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550000373 + ... + 1550000380.

Almost surely, 2^12400003012 is an apocalyptic number.

It is an amenable number.

12400003012 is a deficient number, since it is larger than the sum of its proper divisors (9300002266).

12400003012 is a wasteful number, since it uses less digits than its factorization.

12400003012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100000757 (or 3100000755 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12400003012 its reverse (21030000421), we get a palindrome (33430003433).

The spelling of 12400003012 in words is "twelve billion, four hundred million, three thousand, twelve".