1001001011 has 2 divisors, whose sum is σ = 1001001012. Its totient is φ = 1001001010.

The previous prime is 1001000989. The next prime is 1001001017. The reversal of 1001001011 is 1101001001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1101001001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001001011 - 2¹⁴ = 1000984627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001000986 and 1001001004.

It is not a weakly prime, because it can be changed into another prime (1001001017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500505 + 500500506.

It is an arithmetic number, because the mean of its divisors is an integer number (500500506).

Almost surely, 2^1001001011 is an apocalyptic number.

1001001011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001001011 is an equidigital number, since it uses as much as digits as its factorization.

1001001011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1, while the sum is 5.

The square root of 1001001011 is about 31638.6000164356. The cubic root of 1001001011 is about 1000.3335590593. Note that the first 3 decimals are identical.

Adding to 1001001011 its reverse (1101001001), we get a palindrome (2102002012).

The spelling of 1001001011 in words is "one billion, one million, one thousand, eleven".