1011010011001 has 2 divisors, whose sum is σ = 1011010011002. Its totient is φ = 1011010011000.

The previous prime is 1011010010987. The next prime is 1011010011031. The reversal of 1011010011001 is 1001100101101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624344924025 + 386665086976 = 790155^2 + 621824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011010011001 - 2²⁵ = 1010976456569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011010011031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505505005500 + 505505005501.

It is an arithmetic number, because the mean of its divisors is an integer number (505505005501).

Almost surely, 2^{1011010011001} is an apocalyptic number.

It is an amenable number.

1011010011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011010011001 is an equidigital number, since it uses as much as digits as its factorization.

1011010011001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 1011010011001 its reverse (1001100101101), we get a palindrome (2012110112102).

The spelling of 1011010011001 in words is "one trillion, eleven billion, ten million, eleven thousand, one".