2001220019 has 2 divisors, whose sum is σ = 2001220020. Its totient is φ = 2001220018.

The previous prime is 2001220007. The next prime is 2001220027. The reversal of 2001220019 is 9100221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001220019 - 2⁸ = 2001219763 is a prime.

It is a super-2 number, since 2×2001220019² = 8009763128892720722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001219979 and 2001220006.

It is not a weakly prime, because it can be changed into another prime (2001220069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610009 + 1000610010.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610010).

Almost surely, 2^2001220019 is an apocalyptic number.

2001220019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001220019 is an equidigital number, since it uses as much as digits as its factorization.

2001220019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2001220019 is about 44734.9976975522. The cubic root of 2001220019 is about 1260.1771857567.

The spelling of 2001220019 in words is "two billion, one million, two hundred twenty thousand, nineteen".