2111021219 has 2 divisors, whose sum is σ = 2111021220. Its totient is φ = 2111021218.

The previous prime is 2111021147. The next prime is 2111021221. The reversal of 2111021219 is 9121201112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111021219 - 2⁸ = 2111020963 is a prime.

It is a super-2 number, since 2×2111021219² = 8912821174136491922, which contains 22 as substring.

Together with 2111021221, it forms a pair of twin primes.

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 2111021219.

It is not a weakly prime, because it can be changed into another prime (2111021279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510609 + 1055510610.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510610).

Almost surely, 2^2111021219 is an apocalyptic number.

2111021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111021219 is an equidigital number, since it uses as much as digits as its factorization.

2111021219 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2111021219 is about 45945.8509443453. The cubic root of 2111021219 is about 1282.8155022781.

The spelling of 2111021219 in words is "two billion, one hundred eleven million, twenty-one thousand, two hundred nineteen".