221110322009 has 16 divisors (see below), whose sum is σ = 225913781184. Its totient is φ = 216373032000.

The previous prime is 221110321979. The next prime is 221110322021. The reversal of 221110322009 is 900223011122.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221110322009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221110322029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2942702 + ... + 3016904.

It is an arithmetic number, because the mean of its divisors is an integer number (14119611324).

Almost surely, 2^221110322009 is an apocalyptic number.

It is an amenable number.

221110322009 is a deficient number, since it is larger than the sum of its proper divisors (4803459175).

221110322009 is a wasteful number, since it uses less digits than its factorization.

221110322009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74648.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 221110322009 in words is "two hundred twenty-one billion, one hundred ten million, three hundred twenty-two thousand, nine".