2120809219 has 2 divisors, whose sum is σ = 2120809220. Its totient is φ = 2120809218.

The previous prime is 2120809193. The next prime is 2120809259. The reversal of 2120809219 is 9129080212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120809219 is a prime.

It is a super-2 number, since 2×2120809219² = 8995663486790779922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2120809259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060404609 + 1060404610.

It is an arithmetic number, because the mean of its divisors is an integer number (1060404610).

Almost surely, 2^2120809219 is an apocalyptic number.

2120809219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120809219 is an equidigital number, since it uses as much as digits as its factorization.

2120809219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 2120809219 is about 46052.2444512751. The cubic root of 2120809219 is about 1284.7950879178.

The spelling of 2120809219 in words is "two billion, one hundred twenty million, eight hundred nine thousand, two hundred nineteen".