212330219 has 4 divisors (see below), whose sum is σ = 212618280. Its totient is φ = 212042160.

The previous prime is 212330213. The next prime is 212330269. The reversal of 212330219 is 912033212.

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 212330219 - 2¹⁶ = 212264683 is a prime.

It is a super-2 number, since 2×212330219² = 90168243801175922, 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 = 212330194 and 212330203.

It is not an unprimeable number, because it can be changed into a prime (212330213) 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, 142922 + ... + 144399.

It is an arithmetic number, because the mean of its divisors is an integer number (53154570).

Almost surely, 2^212330219 is an apocalyptic number.

212330219 is a deficient number, since it is larger than the sum of its proper divisors (288061).

212330219 is an equidigital number, since it uses as much as digits as its factorization.

212330219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288060.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 212330219 is about 14571.5551332039. Note that the first 3 decimals coincide. The cubic root of 212330219 is about 596.5826275252.

The spelling of 212330219 in words is "two hundred twelve million, three hundred thirty thousand, two hundred nineteen".