1020011002019 has 4 divisors (see below), whose sum is σ = 1020093213720. Its totient is φ = 1019928790320.

The previous prime is 1020011001983. The next prime is 1020011002033. The reversal of 1020011002019 is 9102001100201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020011002019 - 2¹² = 1020010997923 is a prime.

It is a super-2 number, since 2×1020011002019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020011001988 and 1020011002006.

It is not an unprimeable number, because it can be changed into a prime (1020011002319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41087237 + ... + 41112054.

It is an arithmetic number, because the mean of its divisors is an integer number (255023303430).

Almost surely, 2^{1020011002019} is an apocalyptic number.

1020011002019 is a deficient number, since it is larger than the sum of its proper divisors (82211701).

1020011002019 is an equidigital number, since it uses as much as digits as its factorization.

1020011002019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82211700.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1020011002019 in words is "one trillion, twenty billion, eleven million, two thousand, nineteen".