1243224012 has 36 divisors (see below), whose sum is σ = 2928543800. Its totient is φ = 410489664.

The previous prime is 1243223959. The next prime is 1243224023. The reversal of 1243224012 is 2104223421.

It is a super-2 number, since 2×1243224012² = 3091211888026752288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243224012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132864 + ... + 141912.

Almost surely, 2^1243224012 is an apocalyptic number.

1243224012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1243224012 is an abundant number, since it is smaller than the sum of its proper divisors (1685319788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243224012 is a wasteful number, since it uses less digits than its factorization.

1243224012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9270 (or 9161 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1243224012 is about 35259.3819004247. The cubic root of 1243224012 is about 1075.2673607938.

Adding to 1243224012 its reverse (2104223421), we get a palindrome (3347447433).

The spelling of 1243224012 in words is "one billion, two hundred forty-three million, two hundred twenty-four thousand, twelve".