10101010010101 has 8 divisors (see below), whose sum is σ = 10133197378200. Its totient is φ = 10068873292800.

The previous prime is 10101010010093. The next prime is 10101010010149. The reversal of 10101010010101 is 10101001010101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2633901784900 + 7467108225201 = 1622930^2 + 2732601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10101010010101 - 2³ = 10101010010093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101010011101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12263196 + ... + 13060933.

It is an arithmetic number, because the mean of its divisors is an integer number (1266649672275).

Almost surely, 2^{10101010010101} is an apocalyptic number.

It is an amenable number.

10101010010101 is a deficient number, since it is larger than the sum of its proper divisors (32187368099).

10101010010101 is an equidigital number, since it uses as much as digits as its factorization.

10101010010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25325399.

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

Adding to 10101010010101 its reverse (10101001010101), we get a palindrome (20202011020202).

Subtracting from 10101010010101 its reverse (10101001010101), we obtain a square (9000000 = 3000²).

The spelling of 10101010010101 in words is "ten trillion, one hundred one billion, ten million, ten thousand, one hundred one".