211422019 has 2 divisors, whose sum is σ = 211422020. Its totient is φ = 211422018.

The previous prime is 211422011. The next prime is 211422031. The reversal of 211422019 is 910224112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211422019 - 2³ = 211422011 is a prime.

It is a super-2 number, since 2×211422019² = 89398540236072722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211422011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105711009 + 105711010.

It is an arithmetic number, because the mean of its divisors is an integer number (105711010).

Almost surely, 2^211422019 is an apocalyptic number.

211422019 is a deficient number, since it is larger than the sum of its proper divisors (1).

211422019 is an equidigital number, since it uses as much as digits as its factorization.

211422019 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 211422019 is about 14540.3582830685. The cubic root of 211422019 is about 595.7308243144.

The spelling of 211422019 in words is "two hundred eleven million, four hundred twenty-two thousand, nineteen".