2100320205 has 16 divisors (see below), whose sum is σ = 3361124160. Its totient is φ = 1119966848.

The previous prime is 2100320191. The next prime is 2100320213. The reversal of 2100320205 is 5020230012.

It is a cyclic number.

It is not a de Polignac number, because 2100320205 - 2¹³ = 2100312013 is a prime.

It is a super-2 number, since 2×2100320205² = 8822689927062484050, which contains 22 as substring.

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

It is a congruent number.

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, 111394 + ... + 128876.

It is an arithmetic number, because the mean of its divisors is an integer number (210070260).

Almost surely, 2^2100320205 is an apocalyptic number.

It is an amenable number.

2100320205 is a deficient number, since it is larger than the sum of its proper divisors (1260803955).

2100320205 is a wasteful number, since it uses less digits than its factorization.

2100320205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25500.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2100320205 is about 45829.2505393662. The cubic root of 2100320205 is about 1280.6442486402.

Adding to 2100320205 its reverse (5020230012), we get a palindrome (7120550217).

The spelling of 2100320205 in words is "two billion, one hundred million, three hundred twenty thousand, two hundred five".