21102221330 has 16 divisors (see below), whose sum is σ = 38034589824. Its totient is φ = 8429646000.

The previous prime is 21102221317. The next prime is 21102221339. The reversal of 21102221330 is 3312220112.

It is a junction number, because it is equal to n+sod(n) for n = 21102221299 and 21102221308.

It is not an unprimeable number, because it can be changed into a prime (21102221339) 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, 1397432 + ... + 1412451.

It is an arithmetic number, because the mean of its divisors is an integer number (2377161864).

Almost surely, 2^21102221330 is an apocalyptic number.

21102221330 is a deficient number, since it is larger than the sum of its proper divisors (16932368494).

21102221330 is a wasteful number, since it uses less digits than its factorization.

21102221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810641.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21102221330 its reverse (3312220112), we get a palindrome (24414441442).

The spelling of 21102221330 in words is "twenty-one billion, one hundred two million, two hundred twenty-one thousand, three hundred thirty".