2101010220105 has 16 divisors (see below), whose sum is σ = 3387277548864. Its totient is φ = 1111985051840.

The previous prime is 2101010219999. The next prime is 2101010220107. The reversal of 2101010220105 is 5010220101012.

It is not a de Polignac number, because 2101010220105 - 2¹⁰ = 2101010219081 is a prime.

It is a super-2 number, since 2×2101010220105² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2101010220107) 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 15 ways as a sum of consecutive naturals, for example, 534606234 + ... + 534610163.

It is an arithmetic number, because the mean of its divisors is an integer number (211704846804).

Almost surely, 2^{2101010220105} is an apocalyptic number.

It is an amenable number.

2101010220105 is a deficient number, since it is larger than the sum of its proper divisors (1286267328759).

2101010220105 is a wasteful number, since it uses less digits than its factorization.

2101010220105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069216536.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 2101010220105 its reverse (5010220101012), we get a palindrome (7111230321117).

The spelling of 2101010220105 in words is "two trillion, one hundred one billion, ten million, two hundred twenty thousand, one hundred five".