16012201 has 8 divisors (see below), whose sum is σ = 16376904. Its totient is φ = 15649920.

The previous prime is 16012189. The next prime is 16012207. The reversal of 16012201 is 10221061.

It can be written as a sum of positive squares in 4 ways, for example, as 810000 + 15202201 = 900^2 + 3899^2 .

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 16012201 - 2⁵ = 16012169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16012207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20661 + ... + 21421.

It is an arithmetic number, because the mean of its divisors is an integer number (2047113).

Almost surely, 2^16012201 is an apocalyptic number.

It is an amenable number.

16012201 is a deficient number, since it is larger than the sum of its proper divisors (364703).

16012201 is an equidigital number, since it uses as much as digits as its factorization.

16012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 16012201 is about 4001.5248343600. The cubic root of 16012201 is about 252.0482449412.

Adding to 16012201 its reverse (10221061), we get a palindrome (26233262).

The spelling of 16012201 in words is "sixteen million, twelve thousand, two hundred one".