2102168205 has 24 divisors (see below), whose sum is σ = 3657633408. Its totient is φ = 1116887136.

The previous prime is 2102168197. The next prime is 2102168207. The reversal of 2102168205 is 5028612012.

It is a happy number.

2102168205 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2102168205 - 2³ = 2102168197 is a prime.

It is a super-2 number, since 2×2102168205² = 8838222324225844050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102168207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76977 + ... + 100646.

It is an arithmetic number, because the mean of its divisors is an integer number (152401392).

Almost surely, 2^2102168205 is an apocalyptic number.

It is an amenable number.

2102168205 is a deficient number, since it is larger than the sum of its proper divisors (1555465203).

2102168205 is a wasteful number, since it uses less digits than its factorization.

2102168205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177897 (or 177894 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2102168205 is about 45849.4079023928. The cubic root of 2102168205 is about 1281.0197369109.

The spelling of 2102168205 in words is "two billion, one hundred two million, one hundred sixty-eight thousand, two hundred five".