304221440012 has 48 divisors (see below), whose sum is σ = 623413367808. Its totient is φ = 127190736000.

The previous prime is 304221440011. The next prime is 304221440101. The reversal of 304221440012 is 210044122403.

It is a self number, because there is not a number n which added to its sum of digits gives 304221440012.

It is not an unprimeable number, because it can be changed into a prime (304221440011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27512 + ... + 780512.

It is an arithmetic number, because the mean of its divisors is an integer number (12987778496).

Almost surely, 2^304221440012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304221440012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311706683904).

304221440012 is an abundant number, since it is smaller than the sum of its proper divisors (319191927796).

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

304221440012 is a wasteful number, since it uses less digits than its factorization.

304221440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753366 (or 753364 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 304221440012 its reverse (210044122403), we get a palindrome (514265562415).

The spelling of 304221440012 in words is "three hundred four billion, two hundred twenty-one million, four hundred forty thousand, twelve".