221210011009 has 8 divisors (see below), whose sum is σ = 238300959680. Its totient is φ = 204129747216.

The previous prime is 221210011007. The next prime is 221210011031. The reversal of 221210011009 is 900110012122.

It is a happy number.

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 221210011009 - 2¹ = 221210011007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221210011007) 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, 2628189 + ... + 2711050.

It is an arithmetic number, because the mean of its divisors is an integer number (29787619960).

Almost surely, 2^221210011009 is an apocalyptic number.

It is an amenable number.

221210011009 is a deficient number, since it is larger than the sum of its proper divisors (17090948671).

221210011009 is a wasteful number, since it uses less digits than its factorization.

221210011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342439.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 221210011009 in words is "two hundred twenty-one billion, two hundred ten million, eleven thousand, nine".