1009221689917 has 4 divisors (see below), whose sum is σ = 1153396217056. Its totient is φ = 865047162780.

The previous prime is 1009221689909. The next prime is 1009221689933. The reversal of 1009221689917 is 7199861229001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1009221689917 - 2³ = 1009221689909 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 (1009221689017) 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 3 ways as a sum of consecutive naturals, for example, 72087263559 + ... + 72087263572.

It is an arithmetic number, because the mean of its divisors is an integer number (288349054264).

Almost surely, 2^{1009221689917} is an apocalyptic number.

It is an amenable number.

1009221689917 is a deficient number, since it is larger than the sum of its proper divisors (144174527139).

1009221689917 is an equidigital number, since it uses as much as digits as its factorization.

1009221689917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144174527138.

The product of its (nonzero) digits is 979776, while the sum is 55.

The spelling of 1009221689917 in words is "one trillion, nine billion, two hundred twenty-one million, six hundred eighty-nine thousand, nine hundred seventeen".