20101010101 has 8 divisors (see below), whose sum is σ = 20175926400. Its totient is φ = 20026192128.

The previous prime is 20101010089. The next prime is 20101010107. The reversal of 20101010101 is 10101010102.

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 20101010101 - 2¹⁵ = 20100977333 is a prime.

It is a Duffinian number.

20101010101 is a modest number, since divided by 1010101 gives 201 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101010107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398500 + ... + 446098.

It is an arithmetic number, because the mean of its divisors is an integer number (2521990800).

Almost surely, 2^20101010101 is an apocalyptic number.

It is an amenable number.

20101010101 is a deficient number, since it is larger than the sum of its proper divisors (74916299).

20101010101 is a wasteful number, since it uses less digits than its factorization.

20101010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49163.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 20101010101 its reverse (10101010102), we get a palindrome (30202020203).

Subtracting from 20101010101 its reverse (10101010102), we obtain a palindrome (9999999999).

The spelling of 20101010101 in words is "twenty billion, one hundred one million, ten thousand, one hundred one".