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101212011112 = 2389454931249
BaseRepresentation
bin101111001000010110…
…1001011101001101000
3100200020122020212221011
41132100231023221220
53124240233323422
6114255100353304
710212061620412
oct1362055135150
9320218225834
10101212011112
1139a185a5a83
1217747845834
13970c94ac94
144c81dd99b2
152975849077
hex1790b4ba68

101212011112 has 32 divisors (see below), whose sum is σ = 191953125000. Its totient is φ = 50024798208.

The previous prime is 101212011067. The next prime is 101212011139. The reversal of 101212011112 is 211110212101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88669355076 + 12542656036 = 297774^2 + 111994^2 .

It is a super-2 number, since 2×1012120111122 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101212011092 and 101212011101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3223264 + ... + 3254512.

Almost surely, 2101212011112 is an apocalyptic number.

It is an amenable number.

101212011112 is a deficient number, since it is larger than the sum of its proper divisors (90741113888).

101212011112 is a wasteful number, since it uses less digits than its factorization.

101212011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35893 (or 35889 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101212011112 its reverse (211110212101), we get a palindrome (312322223213).

The spelling of 101212011112 in words is "one hundred one billion, two hundred twelve million, eleven thousand, one hundred twelve".

Divisors: 1 2 4 8 89 178 356 712 4549 9098 18196 31249 36392 62498 124996 249992 404861 809722 1619444 2781161 3238888 5562322 11124644 22249288 142151701 284303402 568606804 1137213608 12651501389 25303002778 50606005556 101212011112