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130120212 = 22310843351
BaseRepresentation
bin1111100000101…
…11101000010100
3100001211210101010
413300113220110
5231302321322
620524532220
73140001135
oct760275024
9301753333
10130120212
11674a4272
12376b1070
1320c5b411
14133d1c8c
15b65420c
hex7c17a14

130120212 has 12 divisors (see below), whose sum is σ = 303613856. Its totient is φ = 43373400.

The previous prime is 130120201. The next prime is 130120229. The reversal of 130120212 is 212021031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 10843351 = 130120212 / (1 + 3 + 0 + 1 + 2 + 0 + 2 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5421664 + ... + 5421687.

Almost surely, 2130120212 is an apocalyptic number.

130120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130120212 is an abundant number, since it is smaller than the sum of its proper divisors (173493644).

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

130120212 is a wasteful number, since it uses less digits than its factorization.

130120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843358 (or 10843356 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 130120212 is about 11407.0246778027. The cubic root of 130120212 is about 506.7357998540.

Adding to 130120212 its reverse (212021031), we get a palindrome (342141243).

The spelling of 130120212 in words is "one hundred thirty million, one hundred twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 10843351 21686702 32530053 43373404 65060106 130120212