10221644389 has 8 divisors (see below), whose sum is σ = 11157063840. Its totient is φ = 9287254800.

The previous prime is 10221644387. The next prime is 10221644473. The reversal of 10221644389 is 98344612201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10221644389 - 2¹ = 10221644387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221644387) 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, 236634 + ... + 276475.

It is an arithmetic number, because the mean of its divisors is an integer number (1394632980).

Almost surely, 2^10221644389 is an apocalyptic number.

It is an amenable number.

10221644389 is a deficient number, since it is larger than the sum of its proper divisors (935419451).

10221644389 is a wasteful number, since it uses less digits than its factorization.

10221644389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514931.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 10221644389 in words is "ten billion, two hundred twenty-one million, six hundred forty-four thousand, three hundred eighty-nine".