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12210200224 = 251722445221
BaseRepresentation
bin10110101111100100…
…01101111010100000
31011111221122102211221
423113302031322200
5200001302401344
65335334544424
7611402663245
oct132762157240
934457572757
1012210200224
1151a6381172
122449208114
1311c7880861
1483b8d75cc
154b6e42184
hex2d7c8dea0

12210200224 has 24 divisors (see below), whose sum is σ = 25452881748. Its totient is φ = 5745976320.

The previous prime is 12210200179. The next prime is 12210200227. The reversal of 12210200224 is 42200201221.

It can be written as a sum of positive squares in 2 ways, for example, as 10066510224 + 2143690000 = 100332^2 + 46300^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12210200198 and 12210200207.

It is not an unprimeable number, because it can be changed into a prime (12210200227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11222067 + ... + 11223154.

Almost surely, 212210200224 is an apocalyptic number.

It is an amenable number.

12210200224 is an abundant number, since it is smaller than the sum of its proper divisors (13242681524).

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

12210200224 is a wasteful number, since it uses less digits than its factorization.

12210200224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22445248 (or 22445240 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12210200224 its reverse (42200201221), we get a palindrome (54410401445).

The spelling of 12210200224 in words is "twelve billion, two hundred ten million, two hundred thousand, two hundred twenty-four".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 22445221 44890442 89780884 179561768 359123536 381568757 718247072 763137514 1526275028 3052550056 6105100112 12210200224