2001022001019 has 12 divisors (see below), whose sum is σ = 2960861823192. Its totient is φ = 1301477724000.

The previous prime is 2001022001009. The next prime is 2001022001023. The reversal of 2001022001019 is 9101002201002.

It is not a de Polignac number, because 2001022001019 - 2²⁷ = 2000887783291 is a prime.

It is a super-2 number, since 2×2001022001019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001022000992 and 2001022001010.

It is not an unprimeable number, because it can be changed into a prime (2001022001009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2711411557 + ... + 2711412294.

It is an arithmetic number, because the mean of its divisors is an integer number (246738485266).

Almost surely, 2^{2001022001019} is an apocalyptic number.

2001022001019 is a deficient number, since it is larger than the sum of its proper divisors (959839822173).

2001022001019 is a wasteful number, since it uses less digits than its factorization.

2001022001019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422823898 (or 5422823895 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 2001022001019 in words is "two trillion, one billion, twenty-two million, one thousand, nineteen".