201117212206 has 8 divisors (see below), whose sum is σ = 301799109600. Its totient is φ = 100517509008.

The previous prime is 201117212183. The next prime is 201117212221. The reversal of 201117212206 is 602212711102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20542431 + ... + 20552218.

It is an arithmetic number, because the mean of its divisors is an integer number (37724888700).

Almost surely, 2^201117212206 is an apocalyptic number.

201117212206 is a deficient number, since it is larger than the sum of its proper divisors (100681897394).

201117212206 is a wasteful number, since it uses less digits than its factorization.

201117212206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41097098.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 201117212206 its reverse (602212711102), we get a palindrome (803329923308).

The spelling of 201117212206 in words is "two hundred one billion, one hundred seventeen million, two hundred twelve thousand, two hundred six".