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2213112205 = 5442622441
BaseRepresentation
bin1000001111101001…
…0110100110001101
312201020100202012201
42003322112212031
514013024042310
61003334401501
7105562100113
oct20372264615
95636322181
102213112205
11a36275a57
12519200291
13293672965
1416dcd1ab3
15ce45be3a
hex83e9698d

2213112205 has 4 divisors (see below), whose sum is σ = 2655734652. Its totient is φ = 1770489760.

The previous prime is 2213112203. The next prime is 2213112217. The reversal of 2213112205 is 5022113122.

2213112205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 987342084 + 1225770121 = 31422^2 + 35011^2 .

It is not a de Polignac number, because 2213112205 - 21 = 2213112203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213112203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221311216 + ... + 221311225.

It is an arithmetic number, because the mean of its divisors is an integer number (663933663).

Almost surely, 22213112205 is an apocalyptic number.

It is an amenable number.

2213112205 is a deficient number, since it is larger than the sum of its proper divisors (442622447).

2213112205 is an equidigital number, since it uses as much as digits as its factorization.

2213112205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442622446.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2213112205 is about 47043.7265211845. The cubic root of 2213112205 is about 1303.1702124606.

Adding to 2213112205 its reverse (5022113122), we get a palindrome (7235225327).

The spelling of 2213112205 in words is "two billion, two hundred thirteen million, one hundred twelve thousand, two hundred five".

Divisors: 1 5 442622441 2213112205