21222802228016 has 80 divisors (see below), whose sum is σ = 41995301860800. Its totient is φ = 10387518418944.

The previous prime is 21222802227971. The next prime is 21222802228039. The reversal of 21222802228016 is 61082220822212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022331845 + ... + 1022352603.

It is an arithmetic number, because the mean of its divisors is an integer number (524941273260).

Almost surely, 2^{21222802228016} is an apocalyptic number.

It is an amenable number.

21222802228016 is a deficient number, since it is larger than the sum of its proper divisors (20772499632784).

21222802228016 is a wasteful number, since it uses less digits than its factorization.

21222802228016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27366 (or 27360 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

Multiplying 21222802228016 by its sum of digits (38), we get a palindrome (806466484664608).

The spelling of 21222802228016 in words is "twenty-one trillion, two hundred twenty-two billion, eight hundred two million, two hundred twenty-eight thousand, sixteen".