2001220221019 has 2 divisors, whose sum is σ = 2001220221020. Its totient is φ = 2001220221018.

The previous prime is 2001220220981. The next prime is 2001220221043. The reversal of 2001220221019 is 9101220221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001220221019 - 2¹⁹ = 2001219696731 is a prime.

It is a super-2 number, since 2×2001220221019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001220221059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610110509 + 1000610110510.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610110510).

Almost surely, 2^{2001220221019} is an apocalyptic number.

2001220221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001220221019 is an equidigital number, since it uses as much as digits as its factorization.

2001220221019 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 spelling of 2001220221019 in words is "two trillion, one billion, two hundred twenty million, two hundred twenty-one thousand, nineteen".