21104243303400 has 144 divisors (see below), whose sum is σ = 73956609286560. Its totient is φ = 5383111324800.

The previous prime is 21104243303369. The next prime is 21104243303401. The reversal of 21104243303400 is 430334240112.

21104243303400 is a `hidden beast` number, since 2 + 1 + 10 + 4 + 243 + 3 + 0 + 3 + 400 = 666.

It is not an unprimeable number, because it can be changed into a prime (21104243303401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 254840766 + ... + 254923565.

It is an arithmetic number, because the mean of its divisors is an integer number (513587564490).

Almost surely, 2^{21104243303400} is an apocalyptic number.

21104243303400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21104243303400 is an abundant number, since it is smaller than the sum of its proper divisors (52852365983160).

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

21104243303400 is a wasteful number, since it uses less digits than its factorization.

21104243303400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509764376 (or 509764364 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21104243303400 its reverse (430334240112), we get a palindrome (21534577543512).

The spelling of 21104243303400 in words is "twenty-one trillion, one hundred four billion, two hundred forty-three million, three hundred three thousand, four hundred".