210122219 has 4 divisors (see below), whose sum is σ = 212653896. Its totient is φ = 207590544.

The previous prime is 210122207. The next prime is 210122279. The reversal of 210122219 is 912221012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 210122219 - 2⁴ = 210122203 is a prime.

It is a super-2 number, since 2×210122219² = 88302693834967922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210122219.

It is not an unprimeable number, because it can be changed into a prime (210122279) 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, 1265714 + ... + 1265879.

It is an arithmetic number, because the mean of its divisors is an integer number (53163474).

Almost surely, 2^210122219 is an apocalyptic number.

210122219 is a deficient number, since it is larger than the sum of its proper divisors (2531677).

210122219 is an equidigital number, since it uses as much as digits as its factorization.

210122219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531676.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 210122219 is about 14495.5930889357. The cubic root of 210122219 is about 594.5074840558.

The spelling of 210122219 in words is "two hundred ten million, one hundred twenty-two thousand, two hundred nineteen".