2101133205 has 24 divisors (see below), whose sum is σ = 3650900760. Its totient is φ = 1117854720.

The previous prime is 2101133141. The next prime is 2101133249. The reversal of 2101133205 is 5023311012.

It can be written as a sum of positive squares in 4 ways, for example, as 1139265009 + 961868196 = 33753^2 + 31014^2 .

It is not a de Polignac number, because 2101133205 - 2⁶ = 2101133141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38676 + ... + 75485.

It is an arithmetic number, because the mean of its divisors is an integer number (152120865).

Almost surely, 2^2101133205 is an apocalyptic number.

It is an amenable number.

2101133205 is a deficient number, since it is larger than the sum of its proper divisors (1549767555).

2101133205 is a wasteful number, since it uses less digits than its factorization.

2101133205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114581 (or 114578 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2101133205 is about 45838.1195622159. The cubic root of 2101133205 is about 1280.8094662201.

Adding to 2101133205 its reverse (5023311012), we get a palindrome (7124444217).

The spelling of 2101133205 in words is "two billion, one hundred one million, one hundred thirty-three thousand, two hundred five".