10221220000221 has 16 divisors (see below), whose sum is σ = 13734271417536. Its totient is φ = 6761294021376.

The previous prime is 10221220000217. The next prime is 10221220000259. The reversal of 10221220000221 is 12200002212201.

It is not a de Polignac number, because 10221220000221 - 2² = 10221220000217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221220000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221220070221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16749420 + ... + 17348933.

It is an arithmetic number, because the mean of its divisors is an integer number (858391963596).

Almost surely, 2^{10221220000221} is an apocalyptic number.

It is an amenable number.

10221220000221 is a deficient number, since it is larger than the sum of its proper divisors (3513051417315).

10221220000221 is a wasteful number, since it uses less digits than its factorization.

10221220000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34099132.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10221220000221 its reverse (12200002212201), we get a palindrome (22421222212422).

The spelling of 10221220000221 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-one", and thus it is an aban number.