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2112110122111 = 116191129274751
BaseRepresentation
bin11110101111000011100…
…100101101010001111111
321110220201120211010200221
4132233003210231101333
5234101100142401421
64254142350002211
7305411025551023
oct36570344552177
97426646733627
102112110122111
11744817112970
122a14114a6367
1312422bc84432
1474325dd6383
1539e1a48b841
hex1ebc392d47f

2112110122111 has 16 divisors (see below), whose sum is σ = 2309895014400. Its totient is φ = 1915293240000.

The previous prime is 2112110122099. The next prime is 2112110122153. The reversal of 2112110122111 is 1112210112112.

It is a cyclic number.

It is not a de Polignac number, because 2112110122111 - 231 = 2109962638463 is a prime.

It is a super-2 number, since 2×21121101221112 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112110128111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7549986 + ... + 7824736.

It is an arithmetic number, because the mean of its divisors is an integer number (144368438400).

Almost surely, 22112110122111 is an apocalyptic number.

2112110122111 is a deficient number, since it is larger than the sum of its proper divisors (197784892289).

2112110122111 is a wasteful number, since it uses less digits than its factorization.

2112110122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276510.

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

Adding to 2112110122111 its reverse (1112210112112), we get a palindrome (3224320234223).

Subtracting from 2112110122111 its reverse (1112210112112), we obtain a palindrome (999900009999).

The spelling of 2112110122111 in words is "two trillion, one hundred twelve billion, one hundred ten million, one hundred twenty-two thousand, one hundred eleven".

Divisors: 1 11 619 1129 6809 12419 274751 698851 3022261 7687361 170070869 310193879 1870779559 3412132669 192010011101 2112110122111