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12222112 = 25754563
BaseRepresentation
bin101110100111…
…111010100000
3211222221120211
4232213322200
511112101422
61113543504
7205612660
oct56477240
924887524
1012222112
116998721
124114b94
1326bc126
1418a21a0
151116577
hexba7ea0

12222112 has 24 divisors (see below), whose sum is σ = 27500256. Its totient is φ = 5237952.

The previous prime is 12222109. The next prime is 12222121. The reversal of 12222112 is 21122221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12222092 and 12222101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27058 + ... + 27505.

It is an arithmetic number, because the mean of its divisors is an integer number (1145844).

Almost surely, 212222112 is an apocalyptic number.

It is an amenable number.

12222112 is an abundant number, since it is smaller than the sum of its proper divisors (15278144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12222112 is an equidigital number, since it uses as much as digits as its factorization.

12222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54580 (or 54572 counting only the distinct ones).

The product of its digits is 32, while the sum is 13.

The square root of 12222112 is about 3496.0137299502. The cubic root of 12222112 is about 230.3467485599.

Adding to 12222112 its reverse (21122221), we get a palindrome (33344333).

The spelling of 12222112 in words is "twelve million, two hundred twenty-two thousand, one hundred twelve".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 54563 109126 218252 381941 436504 763882 873008 1527764 1746016 3055528 6111056 12222112