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12210211230 = 2357412715233
BaseRepresentation
bin10110101111100100…
…10000100110011110
31011111221122222221120
423113302100212132
5200001303224410
65335335111410
7611403040320
oct132762204636
934457588846
1012210211230
1151a6389468
122449212566
1311c7885879
1483b8db610
154b6e45570
hex2d7c9099e

12210211230 has 128 divisors (see below), whose sum is σ = 34440892416. Its totient is φ = 2712268800.

The previous prime is 12210211183. The next prime is 12210211231. The reversal of 12210211230 is 3211201221.

It is a super-2 number, since 2×122102112302 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210211231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2330694 + ... + 2335926.

It is an arithmetic number, because the mean of its divisors is an integer number (269069472).

Almost surely, 212210211230 is an apocalyptic number.

12210211230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12210211230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17220446208).

12210211230 is an abundant number, since it is smaller than the sum of its proper divisors (22230681186).

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

12210211230 is a wasteful number, since it uses less digits than its factorization.

12210211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12210211230 its reverse (3211201221), we get a palindrome (15421412451).

The spelling of 12210211230 in words is "twelve billion, two hundred ten million, two hundred eleven thousand, two hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 41 42 70 82 105 123 205 210 246 271 287 410 542 574 615 813 861 1230 1355 1435 1626 1722 1897 2710 2870 3794 4065 4305 5233 5691 8130 8610 9485 10466 11111 11382 15699 18970 22222 26165 28455 31398 33333 36631 52330 55555 56910 66666 73262 77777 78495 109893 111110 155554 156990 166665 183155 214553 219786 233331 333330 366310 388885 429106 466662 549465 643659 777770 1072765 1098930 1166655 1287318 1418143 1501871 2145530 2333310 2836286 3003742 3218295 4254429 4505613 6436590 7090715 7509355 8508858 9011226 9927001 14181430 15018710 19854002 21272145 22528065 29781003 42544290 45056130 49635005 58143863 59562006 99270010 116287726 148905015 174431589 290719315 297810030 348863178 407007041 581438630 814014082 872157945 1221021123 1744315890 2035035205 2442042246 4070070410 6105105615 12210211230