212111219 has 2 divisors, whose sum is σ = 212111220. Its totient is φ = 212111218.

The previous prime is 212111177. The next prime is 212111243. The reversal of 212111219 is 912111212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212111219 - 2¹⁶ = 212045683 is a prime.

It is a super-2 number, since 2×212111219² = 89982338451331922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212111219.

It is not a weakly prime, because it can be changed into another prime (212113219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055609 + 106055610.

It is an arithmetic number, because the mean of its divisors is an integer number (106055610).

Almost surely, 2^212111219 is an apocalyptic number.

212111219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111219 is an equidigital number, since it uses as much as digits as its factorization.

212111219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 20.

The square root of 212111219 is about 14564.0385539177. The cubic root of 212111219 is about 596.3774494142.

The spelling of 212111219 in words is "two hundred twelve million, one hundred eleven thousand, two hundred nineteen".