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2212002191 = 73761140009
BaseRepresentation
bin1000001111011000…
…0111100110001111
312201011021100120002
42003312013212033
514012233032231
61003254514515
7105546464660
oct20366074617
95634240502
102212002191
11a35687a93
12518965a3b
13293374649
1416dac3367
15ce2dd0cb
hex83d8798f

2212002191 has 16 divisors (see below), whose sum is σ = 2638908480. Its totient is φ = 1814503680.

The previous prime is 2212002151. The next prime is 2212002239. The reversal of 2212002191 is 1912002122.

It is a happy number.

It is not a de Polignac number, because 2212002191 - 210 = 2212001167 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 (2212002151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54206 + ... + 85803.

It is an arithmetic number, because the mean of its divisors is an integer number (164931780).

Almost surely, 22212002191 is an apocalyptic number.

2212002191 is a deficient number, since it is larger than the sum of its proper divisors (426906289).

2212002191 is a wasteful number, since it uses less digits than its factorization.

2212002191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140114.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2212002191 is about 47031.9273579129. The cubic root of 2212002191 is about 1302.9523022725.

The spelling of 2212002191 in words is "two billion, two hundred twelve million, two thousand, one hundred ninety-one".

Divisors: 1 7 37 61 259 427 2257 15799 140009 980063 5180333 8540549 36262331 59783843 316000313 2212002191