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130212211212 = 223217281757171
BaseRepresentation
bin111100101000101000…
…0001010101000001100
3110110002201020200200100
41321101100022220030
54113133311224322
6135452455331100
712256531350636
oct1712120125014
9413081220610
10130212211212
115024a4425a6
122129b980a90
13c381b45cb5
146433749a56
1535c17d0dac
hex1e5140aa0c

130212211212 has 72 divisors (see below), whose sum is σ = 349749861552. Its totient is φ = 40705459200.

The previous prime is 130212211177. The next prime is 130212211223. The reversal of 130212211212 is 212112212031.

130212211212 is a `hidden beast` number, since 1 + 30 + 212 + 211 + 212 = 666.

It is a super-3 number, since 3×1302122112123 (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206614 + ... + 550557.

It is an arithmetic number, because the mean of its divisors is an integer number (4857636966).

Almost surely, 2130212211212 is an apocalyptic number.

130212211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130212211212 is an abundant number, since it is smaller than the sum of its proper divisors (219537650340).

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

130212211212 is a wasteful number, since it uses less digits than its factorization.

130212211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757479 (or 757474 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 130212211212 its reverse (212112212031), we get a palindrome (342324423243).

The spelling of 130212211212 in words is "one hundred thirty billion, two hundred twelve million, two hundred eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 9 12 17 18 34 36 51 68 102 153 204 281 306 562 612 843 1124 1686 2529 3372 4777 5058 9554 10116 14331 19108 28662 42993 57324 85986 171972 757171 1514342 2271513 3028684 4543026 6814539 9086052 12871907 13629078 25743814 27258156 38615721 51487628 77231442 115847163 154462884 212765051 231694326 425530102 463388652 638295153 851060204 1276590306 1914885459 2553180612 3617005867 3829770918 7234011734 7659541836 10851017601 14468023468 21702035202 32553052803 43404070404 65106105606 130212211212