21244300510 has 16 divisors (see below), whose sum is σ = 38887873200. Its totient is φ = 8353690816.

The previous prime is 21244300507. The next prime is 21244300513. The reversal of 21244300510 is 1500344212.

It is an interprime number because it is at equal distance from previous prime (21244300507) and next prime (21244300513).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244300513) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18003055 + ... + 18004234.

It is an arithmetic number, because the mean of its divisors is an integer number (2430492075).

Almost surely, 2^21244300510 is an apocalyptic number.

21244300510 is a deficient number, since it is larger than the sum of its proper divisors (17643572690).

21244300510 is a wasteful number, since it uses less digits than its factorization.

21244300510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36007355.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 21244300510 its reverse (1500344212), we get a palindrome (22744644722).

The spelling of 21244300510 in words is "twenty-one billion, two hundred forty-four million, three hundred thousand, five hundred ten".