21303241403044 has 12 divisors (see below), whose sum is σ = 37805752349568. Its totient is φ = 10501597874600.

The previous prime is 21303241403039. The next prime is 21303241403069. The reversal of 21303241403044 is 44030414230312.

It is a junction number, because it is equal to n+sod(n) for n = 21303241402997 and 21303241403015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37505706412 + ... + 37505706979.

It is an arithmetic number, because the mean of its divisors is an integer number (3150479362464).

Almost surely, 2^{21303241403044} is an apocalyptic number.

It is an amenable number.

21303241403044 is a deficient number, since it is larger than the sum of its proper divisors (16502510946524).

21303241403044 is a wasteful number, since it uses less digits than its factorization.

21303241403044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75011413466 (or 75011413464 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21303241403044 its reverse (44030414230312), we get a palindrome (65333655633356).

The spelling of 21303241403044 in words is "twenty-one trillion, three hundred three billion, two hundred forty-one million, four hundred three thousand, forty-four".