201227666 has 8 divisors (see below), whose sum is σ = 306346800. Its totient is φ = 99112068.

The previous prime is 201227647. The next prime is 201227681. The reversal of 201227666 is 666722102.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750716 + ... + 750983.

It is an arithmetic number, because the mean of its divisors is an integer number (38293350).

Almost surely, 2^201227666 is an apocalyptic number.

201227666 is a deficient number, since it is larger than the sum of its proper divisors (105119134).

201227666 is a wasteful number, since it uses less digits than its factorization.

201227666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501768.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 201227666 is about 14185.4737672028. The cubic root of 201227666 is about 585.9976800259.

Adding to 201227666 its reverse (666722102), we get a palindrome (867949768).

The spelling of 201227666 in words is "two hundred one million, two hundred twenty-seven thousand, six hundred sixty-six".