21003100330 has 16 divisors (see below), whose sum is σ = 40029438600. Its totient is φ = 7907049472.

The previous prime is 21003100301. The next prime is 21003100351. The reversal of 21003100330 is 3300130012.

It can be written as a sum of positive squares in 4 ways, for example, as 14347967089 + 6655133241 = 119783^2 + 81579^2 .

It is a super-2 number, since 2×21003100330² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21003100330.

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, 61773655 + ... + 61773994.

Almost surely, 2^21003100330 is an apocalyptic number.

21003100330 is a deficient number, since it is larger than the sum of its proper divisors (19026338270).

21003100330 is a wasteful number, since it uses less digits than its factorization.

21003100330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123547673.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 21003100330 its reverse (3300130012), we get a palindrome (24303230342).

The spelling of 21003100330 in words is "twenty-one billion, three million, one hundred thousand, three hundred thirty".