201066321 has 8 divisors (see below), whose sum is σ = 268483680. Its totient is φ = 133846592.

The previous prime is 201066319. The next prime is 201066343. The reversal of 201066321 is 123660102.

It is a happy number.

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 201066321 - 2¹ = 201066319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201066301) 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, 47016 + ... + 51113.

It is an arithmetic number, because the mean of its divisors is an integer number (33560460).

Almost surely, 2^201066321 is an apocalyptic number.

It is an amenable number.

201066321 is a deficient number, since it is larger than the sum of its proper divisors (67417359).

201066321 is an equidigital number, since it uses as much as digits as its factorization.

201066321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98815.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 201066321 is about 14179.7856471810. The cubic root of 201066321 is about 585.8410198635.

The spelling of 201066321 in words is "two hundred one million, sixty-six thousand, three hundred twenty-one".