211222019 has 2 divisors, whose sum is σ = 211222020. Its totient is φ = 211222018.

The previous prime is 211221979. The next prime is 211222057. The reversal of 211222019 is 910222112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211222019 - 2⁸ = 211221763 is a prime.

It is a super-2 number, since 2×211222019² = 89229482620872722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211222519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611009 + 105611010.

It is an arithmetic number, because the mean of its divisors is an integer number (105611010).

Almost surely, 2^211222019 is an apocalyptic number.

211222019 is a deficient number, since it is larger than the sum of its proper divisors (1).

211222019 is an equidigital number, since it uses as much as digits as its factorization.

211222019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 211222019 is about 14533.4792462094. The cubic root of 211222019 is about 595.5429161754.

The spelling of 211222019 in words is "two hundred eleven million, two hundred twenty-two thousand, nineteen".