1204224012 has 18 divisors (see below), whose sum is σ = 3044010788. Its totient is φ = 401407992.

The previous prime is 1204223981. The next prime is 1204224013. The reversal of 1204224012 is 2104224021.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1204224012² = 2900310942154752288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1204224013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16725298 + ... + 16725369.

Almost surely, 2^1204224012 is an apocalyptic number.

1204224012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1204224012 is an abundant number, since it is smaller than the sum of its proper divisors (1839786776).

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

1204224012 is a wasteful number, since it uses less digits than its factorization.

1204224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33450677 (or 33450672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1204224012 is about 34701.9309549195. The cubic root of 1204224012 is about 1063.9039653181.

Adding to 1204224012 its reverse (2104224021), we get a palindrome (3308448033).

Subtracting 1204224012 from its reverse (2104224021), we obtain a palindrome (900000009).

The spelling of 1204224012 in words is "one billion, two hundred four million, two hundred twenty-four thousand, twelve".