21003101330 has 16 divisors (see below), whose sum is σ = 38024114904. Its totient is φ = 8352677760.

The previous prime is 21003101309. The next prime is 21003101347. The reversal of 21003101330 is 3310130012.

It can be written as a sum of positive squares in 4 ways, for example, as 20948799169 + 54302161 = 144737^2 + 7369^2 .

It is a super-2 number, since 2×21003101330² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 6068531 + ... + 6071990.

Almost surely, 2^21003101330 is an apocalyptic number.

21003101330 is a deficient number, since it is larger than the sum of its proper divisors (17021013574).

21003101330 is a wasteful number, since it uses less digits than its factorization.

21003101330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12140701.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21003101330 its reverse (3310130012), we get a palindrome (24313231342).

The spelling of 21003101330 in words is "twenty-one billion, three million, one hundred one thousand, three hundred thirty".