212220219 has 8 divisors (see below), whose sum is σ = 283033600. Its totient is φ = 141443496.

The previous prime is 212220191. The next prime is 212220247. The reversal of 212220219 is 912022212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212220191) and next prime (212220247).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212220219 - 2⁷ = 212220091 is a prime.

It is a super-2 number, since 2×212220219² = 90074842704815922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212220195 and 212220204.

It is not an unprimeable number, because it can be changed into a prime (212220259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10182 + ... + 22980.

It is an arithmetic number, because the mean of its divisors is an integer number (35379200).

Almost surely, 2^212220219 is an apocalyptic number.

212220219 is a deficient number, since it is larger than the sum of its proper divisors (70813381).

212220219 is a wasteful number, since it uses less digits than its factorization.

212220219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 212220219 is about 14567.7801672046. The cubic root of 212220219 is about 596.4795876705.

The spelling of 212220219 in words is "two hundred twelve million, two hundred twenty thousand, two hundred nineteen".