210222165 has 16 divisors (see below), whose sum is σ = 341870976. Its totient is φ = 110280000.

The previous prime is 210222113. The next prime is 210222167. The reversal of 210222165 is 561222012.

It is a happy number.

It is not a de Polignac number, because 210222165 - 2⁶ = 210222101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210222167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113961 + ... + 115790.

It is an arithmetic number, because the mean of its divisors is an integer number (21366936).

Almost surely, 2^210222165 is an apocalyptic number.

It is an amenable number.

210222165 is a deficient number, since it is larger than the sum of its proper divisors (131648811).

210222165 is a wasteful number, since it uses less digits than its factorization.

210222165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229820.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 210222165 is about 14499.0401406438. The cubic root of 210222165 is about 594.6017295649.

Adding to 210222165 its reverse (561222012), we get a palindrome (771444177).

The spelling of 210222165 in words is "two hundred ten million, two hundred twenty-two thousand, one hundred sixty-five".