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2112201205 = 52342143627
BaseRepresentation
bin111110111100101…
…1010000111110101
312110012110221100021
41331321122013311
513311210414310
6545331445141
7103225262002
oct17571320765
95405427307
102112201205
11994312034
124ab4567b1
132787a05ca
141607448a9
15c56775da
hex7de5a1f5

2112201205 has 16 divisors (see below), whose sum is σ = 2651186304. Its totient is φ = 1612416960.

The previous prime is 2112201187. The next prime is 2112201211. The reversal of 2112201205 is 5021022112.

It is a happy number.

It is not a de Polignac number, because 2112201205 - 29 = 2112200693 is a prime.

It is a super-3 number, since 3×21122012053 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

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, 26602 + ... + 70228.

It is an arithmetic number, because the mean of its divisors is an integer number (165699144).

Almost surely, 22112201205 is an apocalyptic number.

It is an amenable number.

2112201205 is a deficient number, since it is larger than the sum of its proper divisors (538985099).

2112201205 is a wasteful number, since it uses less digits than its factorization.

2112201205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44076.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2112201205 is about 45958.6902010925. The cubic root of 2112201205 is about 1283.0544738829.

Adding to 2112201205 its reverse (5021022112), we get a palindrome (7133223317).

The spelling of 2112201205 in words is "two billion, one hundred twelve million, two hundred one thousand, two hundred five".

Divisors: 1 5 23 115 421 2105 9683 43627 48415 218135 1003421 5017105 18366967 91834835 422440241 2112201205