221201202110009 has 16 divisors (see below), whose sum is σ = 244023416856000. Its totient is φ = 198831187230720.

The previous prime is 221201202109967. The next prime is 221201202110017. The reversal of 221201202110009 is 900011202102122.

It is not a de Polignac number, because 221201202110009 - 2²⁰ = 221201201061433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201202110039) 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, 160279097 + ... + 161653305.

It is an arithmetic number, because the mean of its divisors is an integer number (15251463553500).

Almost surely, 2^{221201202110009} is an apocalyptic number.

It is an amenable number.

221201202110009 is a deficient number, since it is larger than the sum of its proper divisors (22822214745991).

221201202110009 is a wasteful number, since it uses less digits than its factorization.

221201202110009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538728.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 221201202110009 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred two million, one hundred ten thousand, nine".