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30213122212 = 22713505116433
BaseRepresentation
bin11100001000110101…
…111010100010100100
32212222121022122002101
4130020311322202210
5443334024402322
621514004021444
72116465205260
oct341065724244
985877278071
1030213122212
11118a4579999
125a32391884
132b06595110
1416688850a0
15bbc6c6327
hex708d7a8a4

30213122212 has 48 divisors (see below), whose sum is σ = 65091261312. Its totient is φ = 11949350400.

The previous prime is 30213122201. The next prime is 30213122221. The reversal of 30213122212 is 21222131203.

It is a self number, because there is not a number n which added to its sum of digits gives 30213122212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830348 + ... + 1846780.

It is an arithmetic number, because the mean of its divisors is an integer number (1356067944).

Almost surely, 230213122212 is an apocalyptic number.

It is an amenable number.

30213122212 is an abundant number, since it is smaller than the sum of its proper divisors (34878139100).

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

30213122212 is a wasteful number, since it uses less digits than its factorization.

30213122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21508 (or 21506 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30213122212 its reverse (21222131203), we get a palindrome (51435253415).

The spelling of 30213122212 in words is "thirty billion, two hundred thirteen million, one hundred twenty-two thousand, two hundred twelve".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 5051 10102 16433 20204 32866 35357 65663 65732 70714 115031 131326 141428 213629 230062 262652 427258 459641 460124 854516 919282 1495403 1838564 2990806 5981612 83003083 166006166 332012332 581021581 1079040079 1162043162 2158080158 2324086324 4316160316 7553280553 15106561106 30213122212