10101010111001 has 4 divisors (see below), whose sum is σ = 10695187176372. Its totient is φ = 9506833045632.

The previous prime is 10101010110937. The next prime is 10101010111039. The reversal of 10101010111001 is 10011101010101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5775254886976 + 4325755224025 = 2403176^2 + 2079845^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101010111001 - 2⁶ = 10101010110937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10101010111001.

It is not an unprimeable number, because it can be changed into a prime (10101010111081) 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, 297088532660 + ... + 297088532693.

It is an arithmetic number, because the mean of its divisors is an integer number (2673796794093).

Almost surely, 2^{10101010111001} is an apocalyptic number.

It is an amenable number.

10101010111001 is a deficient number, since it is larger than the sum of its proper divisors (594177065371).

10101010111001 is an equidigital number, since it uses as much as digits as its factorization.

10101010111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594177065370.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 10101010111001 its reverse (10011101010101), we get a palindrome (20112111121102).

The spelling of 10101010111001 in words is "ten trillion, one hundred one billion, ten million, one hundred eleven thousand, one".