21222001330 has 16 divisors (see below), whose sum is σ = 39860455104. Its totient is φ = 8119722160.

The previous prime is 21222001319. The next prime is 21222001351. The reversal of 21222001330 is 3310022212.

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, 46134556 + ... + 46135015.

It is an arithmetic number, because the mean of its divisors is an integer number (2491278444).

Almost surely, 2^21222001330 is an apocalyptic number.

21222001330 is a deficient number, since it is larger than the sum of its proper divisors (18638453774).

21222001330 is a wasteful number, since it uses less digits than its factorization.

21222001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92269601.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21222001330 its reverse (3310022212), we get a palindrome (24532023542).

The spelling of 21222001330 in words is "twenty-one billion, two hundred twenty-two million, one thousand, three hundred thirty".