212212219 has 2 divisors, whose sum is σ = 212212220. Its totient is φ = 212212218.

The previous prime is 212212213. The next prime is 212212243. The reversal of 212212219 is 912212212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212212219 - 2⁹ = 212211707 is a prime.

It is a super-2 number, since 2×212212219² = 90068051785807922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212212219.

It is not a weakly prime, because it can be changed into another prime (212212213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106109 + 106106110.

It is an arithmetic number, because the mean of its divisors is an integer number (106106110).

Almost surely, 2^212212219 is an apocalyptic number.

212212219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212219 is an equidigital number, since it uses as much as digits as its factorization.

212212219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

The square root of 212212219 is about 14567.5055860638. The cubic root of 212212219 is about 596.4720924741.

It can be divided in two parts, 2122 and 12219, that added together give a palindrome (14341).

The spelling of 212212219 in words is "two hundred twelve million, two hundred twelve thousand, two hundred nineteen".