21001030330 has 16 divisors (see below), whose sum is σ = 43202119680. Its totient is φ = 7200353232.

The previous prime is 21001030301. The next prime is 21001030361. The reversal of 21001030330 is 3303010012.

It is a self number, because there is not a number n which added to its sum of digits gives 21001030330.

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, 150007290 + ... + 150007429.

It is an arithmetic number, because the mean of its divisors is an integer number (2700132480).

Almost surely, 2^21001030330 is an apocalyptic number.

21001030330 is an abundant number, since it is smaller than the sum of its proper divisors (22201089350).

21001030330 is a wasteful number, since it uses less digits than its factorization.

21001030330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300014733.

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

Adding to 21001030330 its reverse (3303010012), we get a palindrome (24304040342).

The spelling of 21001030330 in words is "twenty-one billion, one million, thirty thousand, three hundred thirty".