16001227 has 4 divisors (see below), whose sum is σ = 17455896. Its totient is φ = 14546560.

The previous prime is 16001207. The next prime is 16001231. The reversal of 16001227 is 72210061.

16001227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16001227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16001207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727318 + ... + 727339.

It is an arithmetic number, because the mean of its divisors is an integer number (4363974).

Almost surely, 2^16001227 is an apocalyptic number.

16001227 is a deficient number, since it is larger than the sum of its proper divisors (1454669).

16001227 is a wasteful number, since it uses less digits than its factorization.

16001227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454668.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 16001227 is about 4000.1533720596. The cubic root of 16001227 is about 251.9906511607.

Adding to 16001227 its reverse (72210061), we get a palindrome (88211288).

The spelling of 16001227 in words is "sixteen million, one thousand, two hundred twenty-seven".