1001020011011 has 2 divisors, whose sum is σ = 1001020011012. Its totient is φ = 1001020011010.

The previous prime is 1001020011001. The next prime is 1001020011073. The reversal of 1001020011011 is 1101100201001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1101100201001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001020011011 - 2¹⁰ = 1001020009987 is a prime.

It is a super-2 number, since 2×1001020011011² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001020011011.

It is not a weakly prime, because it can be changed into another prime (1001020011001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500510005505 + 500510005506.

It is an arithmetic number, because the mean of its divisors is an integer number (500510005506).

Almost surely, 2^{1001020011011} is an apocalyptic number.

1001020011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001020011011 is an equidigital number, since it uses as much as digits as its factorization.

1001020011011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1001020011011 its reverse (1101100201001), we get a palindrome (2102120212012).

The spelling of 1001020011011 in words is "one trillion, one billion, twenty million, eleven thousand, eleven".