21010304143 has 8 divisors (see below), whose sum is σ = 21593818880. Its totient is φ = 20434728600.

The previous prime is 21010304129. The next prime is 21010304173. The reversal of 21010304143 is 34140301012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21010304143 - 2⁹ = 21010303631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21010304143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010304123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1979433 + ... + 1990018.

It is an arithmetic number, because the mean of its divisors is an integer number (2699227360).

Almost surely, 2^21010304143 is an apocalyptic number.

21010304143 is a deficient number, since it is larger than the sum of its proper divisors (583514737).

21010304143 is an equidigital number, since it uses as much as digits as its factorization.

21010304143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969597.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21010304143 its reverse (34140301012), we get a palindrome (55150605155).

The spelling of 21010304143 in words is "twenty-one billion, ten million, three hundred four thousand, one hundred forty-three".