21304120330144 has 48 divisors (see below), whose sum is σ = 44632856520000. Its totient is φ = 9975089101824.

The previous prime is 21304120330091. The next prime is 21304120330151. The reversal of 21304120330144 is 44103302140312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98288694 + ... + 98505205.

It is an arithmetic number, because the mean of its divisors is an integer number (929851177500).

Almost surely, 2^{21304120330144} is an apocalyptic number.

It is an amenable number.

21304120330144 is an abundant number, since it is smaller than the sum of its proper divisors (23328736189856).

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

21304120330144 is a wasteful number, since it uses less digits than its factorization.

21304120330144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196794125 (or 196794117 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21304120330144 its reverse (44103302140312), we get a palindrome (65407422470456).

The spelling of 21304120330144 in words is "twenty-one trillion, three hundred four billion, one hundred twenty million, three hundred thirty thousand, one hundred forty-four".