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12122210212 = 2271954322153
BaseRepresentation
bin10110100101000101…
…00011111110100100
31011021211002002020121
423102202203332210
5144311241211322
65322513011324
7606254041510
oct132242437644
934254062217
1012122210212
115160742a52
122423853b44
1311b2583768
1482dd51140
154ae360ec7
hex2d28a3fa4

12122210212 has 24 divisors (see below), whose sum is σ = 24246755456. Its totient is φ = 5194732608.

The previous prime is 12122210153. The next prime is 12122210339. The reversal of 12122210212 is 21201222121.

It is a happy number.

12122210212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 536128 + ... + 558280.

Almost surely, 212122210212 is an apocalyptic number.

It is an amenable number.

12122210212 is an abundant number, since it is smaller than the sum of its proper divisors (12124545244).

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

12122210212 is a wasteful number, since it uses less digits than its factorization.

12122210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41707 (or 41705 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12122210212 its reverse (21201222121), we get a palindrome (33323432333).

The spelling of 12122210212 in words is "twelve billion, one hundred twenty-two million, two hundred ten thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 19543 22153 39086 44306 78172 88612 136801 155071 273602 310142 547204 620284 432936079 865872158 1731744316 3030552553 6061105106 12122210212