16222201 has 4 divisors (see below), whose sum is σ = 16232832. Its totient is φ = 16211572.

The previous prime is 16222127. The next prime is 16222211. The reversal of 16222201 is 10222261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16222201 is a prime.

It is a super-3 number, since 3×16222201³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545 + ... + 6238.

It is an arithmetic number, because the mean of its divisors is an integer number (4058208).

Almost surely, 2^16222201 is an apocalyptic number.

It is an amenable number.

16222201 is a deficient number, since it is larger than the sum of its proper divisors (10631).

16222201 is an equidigital number, since it uses as much as digits as its factorization.

16222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 16222201 is about 4027.6793566519. The cubic root of 16222201 is about 253.1453335492.

Adding to 16222201 its reverse (10222261), we get a palindrome (26444462).

The spelling of 16222201 in words is "sixteen million, two hundred twenty-two thousand, two hundred one".