10021044221 has 16 divisors (see below), whose sum is σ = 10990256640. Its totient is φ = 9110283840.

The previous prime is 10021044217. The next prime is 10021044223. The reversal of 10021044221 is 12244012001.

It is a cyclic number.

It is not a de Polignac number, because 10021044221 - 2² = 10021044217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10021044221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021044223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117371 + ... + 183896.

It is an arithmetic number, because the mean of its divisors is an integer number (686891040).

Almost surely, 2^10021044221 is an apocalyptic number.

It is an amenable number.

10021044221 is a deficient number, since it is larger than the sum of its proper divisors (969212419).

10021044221 is a wasteful number, since it uses less digits than its factorization.

10021044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301364.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10021044221 its reverse (12244012001), we get a palindrome (22265056222).

The spelling of 10021044221 in words is "ten billion, twenty-one million, forty-four thousand, two hundred twenty-one".