212320219 has 2 divisors, whose sum is σ = 212320220. Its totient is φ = 212320218.

The previous prime is 212320217. The next prime is 212320237. The reversal of 212320219 is 912023212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212320219 - 2¹ = 212320217 is a prime.

It is a super-2 number, since 2×212320219² = 90159750792415922, which contains 22 as substring.

Together with 212320217, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212320219.

It is not a weakly prime, because it can be changed into another prime (212320217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160109 + 106160110.

It is an arithmetic number, because the mean of its divisors is an integer number (106160110).

Almost surely, 2^212320219 is an apocalyptic number.

212320219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320219 is an equidigital number, since it uses as much as digits as its factorization.

212320219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 212320219 is about 14571.2119948891. The cubic root of 212320219 is about 596.5732617365.

The spelling of 212320219 in words is "two hundred twelve million, three hundred twenty thousand, two hundred nineteen".