221100109 has 8 divisors (see below), whose sum is σ = 228443072. Its totient is φ = 213857280.

The previous prime is 221100107. The next prime is 221100133. The reversal of 221100109 is 901001122.

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 221100109 - 2¹ = 221100107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221100092 and 221100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100101) 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, 20532 + ... + 29389.

It is an arithmetic number, because the mean of its divisors is an integer number (28555384).

Almost surely, 2^221100109 is an apocalyptic number.

It is an amenable number.

221100109 is a deficient number, since it is larger than the sum of its proper divisors (7342963).

221100109 is a wasteful number, since it uses less digits than its factorization.

221100109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50067.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 221100109 is about 14869.4353961406. The cubic root of 221100109 is about 604.6856359211.

The spelling of 221100109 in words is "two hundred twenty-one million, one hundred thousand, one hundred nine".