211420219 has 2 divisors, whose sum is σ = 211420220. Its totient is φ = 211420218.

The previous prime is 211420199. The next prime is 211420229. The reversal of 211420219 is 912024112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211420219 - 2¹³ = 211412027 is a prime.

It is a super-2 number, since 2×211420219² = 89397018004015922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211420219.

It is not a weakly prime, because it can be changed into another prime (211420229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710109 + 105710110.

It is an arithmetic number, because the mean of its divisors is an integer number (105710110).

Almost surely, 2^211420219 is an apocalyptic number.

211420219 is a deficient number, since it is larger than the sum of its proper divisors (1).

211420219 is an equidigital number, since it uses as much as digits as its factorization.

211420219 is an evil number, because the sum of its binary digits is even.

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

The square root of 211420219 is about 14540.2963862502. The cubic root of 211420219 is about 595.7291336697.

The spelling of 211420219 in words is "two hundred eleven million, four hundred twenty thousand, two hundred nineteen".