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12222112210221 = 3374713991674587
BaseRepresentation
bin1011000111011010111010…
…1010000001110100101101
31121021102102000101110020210
42301312232222001310231
53100221341211211341
641554432201333033
72401006222443504
oct261665652016455
947242360343223
1012222112210221
113992406792901
121454888797179
136a8703b8b104
143037a66cd83b
15162dd278ac16
hexb1daea81d2d

12222112210221 has 32 divisors (see below), whose sum is σ = 17104911667200. Its totient is φ = 7753627907136.

The previous prime is 12222112210211. The next prime is 12222112210223. The reversal of 12222112210221 is 12201221122221.

It is not a de Polignac number, because 12222112210221 - 26 = 12222112210157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222112210223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6461290 + ... + 8135876.

It is an arithmetic number, because the mean of its divisors is an integer number (534528489600).

Almost surely, 212222112210221 is an apocalyptic number.

It is an amenable number.

12222112210221 is a deficient number, since it is larger than the sum of its proper divisors (4882799456979).

12222112210221 is a wasteful number, since it uses less digits than its factorization.

12222112210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676073.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12222112210221 its reverse (12201221122221), we get a palindrome (24423333332442).

The spelling of 12222112210221 in words is "twelve trillion, two hundred twenty-two billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".

Divisors: 1 3 37 47 111 141 1399 1739 4197 5217 51763 65753 155289 197259 1674587 2432861 5023761 7298583 61959719 78705589 185879157 236116767 2342747213 2912106793 7028241639 8736320379 86681646881 110109119011 260044940643 330327357033 4074037403407 12222112210221