3222161 has 4 divisors (see below), whose sum is σ = 3333300. Its totient is φ = 3111024.

The previous prime is 3222151. The next prime is 3222169. The reversal of 3222161 is 1612223.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 801025 = 1556^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 3222161 - 2¹⁰ = 3221137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3222169) 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, 55526 + ... + 55583.

It is an arithmetic number, because the mean of its divisors is an integer number (833325).

Almost surely, 2^3222161 is an apocalyptic number.

It is an amenable number.

3222161 is a deficient number, since it is larger than the sum of its proper divisors (111139).

3222161 is a wasteful number, since it uses less digits than its factorization.

3222161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111138.

The product of its digits is 144, while the sum is 17.

The square root of 3222161 is about 1795.0378826086. The cubic root of 3222161 is about 147.7006519405.

Adding to 3222161 its reverse (1612223), we get a palindrome (4834384).

The spelling of 3222161 in words is "three million, two hundred twenty-two thousand, one hundred sixty-one".