10101010 has 32 divisors (see below), whose sum is σ = 18749232. Its totient is φ = 3916800.

The previous prime is 10100999. The next prime is 10101023. The reversal of 10101010 is 1010101.

10101010 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 8 ways, for example, as 7901721 + 2199289 = 2811^2 + 1483^2 .

It is an alternating number because its digits alternate between odd and even.

10101010 is an undulating number in base 10.

10101010 is a modest number, since divided by 101010 gives 10 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73662 + ... + 73798.

Almost surely, 2^10101010 is an apocalyptic number.

10101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10101010 is a deficient number, since it is larger than the sum of its proper divisors (8648222).

10101010 is a wasteful number, since it uses less digits than its factorization.

10101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318.

The product of its (nonzero) digits is 1, while the sum is 4.

The square root of 10101010 is about 3178.2086149276. The cubic root of 10101010 is about 216.1664383621.

Adding to 10101010 its reverse (1010101), we get a palindrome (11111111).

Subtracting from 10101010 its reverse (1010101), we obtain a palindrome (9090909).

The spelling of 10101010 in words is "ten million, one hundred one thousand, ten".