21003424710 has 16 divisors (see below), whose sum is σ = 50408219376. Its totient is φ = 5600913248.

The previous prime is 21003424669. The next prime is 21003424711. The reversal of 21003424710 is 1742430012.

It is a happy number.

It is a super-3 number, since 3×21003424710³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003424711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350057049 + ... + 350057108.

It is an arithmetic number, because the mean of its divisors is an integer number (3150513711).

Almost surely, 2^21003424710 is an apocalyptic number.

21003424710 is an abundant number, since it is smaller than the sum of its proper divisors (29404794666).

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

21003424710 is a wasteful number, since it uses less digits than its factorization.

21003424710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700114167.

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 21003424710 its reverse (1742430012), we get a palindrome (22745854722).

The spelling of 21003424710 in words is "twenty-one billion, three million, four hundred twenty-four thousand, seven hundred ten".