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2112122201 = 71012987443
BaseRepresentation
bin111110111100100…
…0110110101011001
312110012022220222012
41331321012311121
513311200402301
6545330035305
7103224512450
oct17571066531
95405286865
102112122201
11994268742
124ab418b35
13278773667
14160723b97
15c565debb
hex7de46d59

2112122201 has 8 divisors (see below), whose sum is σ = 2437754304. Its totient is φ = 1792465200.

The previous prime is 2112122191. The next prime is 2112122209. The reversal of 2112122201 is 1022212112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112122201 - 218 = 2111860057 is a prime.

It is a super-2 number, since 2×21121222012 = 8922120383914168802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2112122209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493015 + ... + 1494428.

It is an arithmetic number, because the mean of its divisors is an integer number (304719288).

Almost surely, 22112122201 is an apocalyptic number.

It is an amenable number.

2112122201 is a deficient number, since it is larger than the sum of its proper divisors (325632103).

2112122201 is a wasteful number, since it uses less digits than its factorization.

2112122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987551.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2112122201 is about 45957.8306820503. The cubic root of 2112122201 is about 1283.0384767170.

Adding to 2112122201 its reverse (1022212112), we get a palindrome (3134334313).

The spelling of 2112122201 in words is "two billion, one hundred twelve million, one hundred twenty-two thousand, two hundred one".

Divisors: 1 7 101 707 2987443 20912101 301731743 2112122201