102221009 has 8 divisors (see below), whose sum is σ = 111619200. Its totient is φ = 92840400.

The previous prime is 102220997. The next prime is 102221071. The reversal of 102221009 is 900122201.

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 102221009 - 2⁸ = 102220753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102221089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9767 + ... + 17315.

It is an arithmetic number, because the mean of its divisors is an integer number (13952400).

Almost surely, 2^102221009 is an apocalyptic number.

It is an amenable number.

102221009 is a deficient number, since it is larger than the sum of its proper divisors (9398191).

102221009 is a wasteful number, since it uses less digits than its factorization.

102221009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8791.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 102221009 is about 10110.4405937625. The cubic root of 102221009 is about 467.5700891035.

The spelling of 102221009 in words is "one hundred two million, two hundred twenty-one thousand, nine".