1204223412 has 72 divisors (see below), whose sum is σ = 3273842880. Its totient is φ = 343512960.

The previous prime is 1204223399. The next prime is 1204223467. The reversal of 1204223412 is 2143224021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492112 + ... + 494552.

It is an arithmetic number, because the mean of its divisors is an integer number (45470040).

Almost surely, 2^1204223412 is an apocalyptic number.

1204223412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204223412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636921440).

1204223412 is an abundant number, since it is smaller than the sum of its proper divisors (2069619468).

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

1204223412 is a wasteful number, since it uses less digits than its factorization.

1204223412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301 (or 3292 counting only the distinct ones).

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

The square root of 1204223412 is about 34701.9223098664. The cubic root of 1204223412 is about 1063.9037886227.

Adding to 1204223412 its reverse (2143224021), we get a palindrome (3347447433).

The spelling of 1204223412 in words is "one billion, two hundred four million, two hundred twenty-three thousand, four hundred twelve".