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130121207 is a prime number
BaseRepresentation
bin1111100000101…
…11110111110111
3100001211211201222
413300113313313
5231302334312
620524540555
73140004056
oct760276767
9301754658
10130121207
11674a4a97
12376b175b
1320c5b9c8
14133d239d
15b654672
hex7c17df7

130121207 has 2 divisors, whose sum is σ = 130121208. Its totient is φ = 130121206.

The previous prime is 130121191. The next prime is 130121227. The reversal of 130121207 is 702121031.

It is a weak prime.

It is an emirp because it is prime and its reverse (702121031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130121207 - 24 = 130121191 is a prime.

It is a super-2 number, since 2×1301212072 = 33863057022273698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65060603 + 65060604.

It is an arithmetic number, because the mean of its divisors is an integer number (65060604).

Almost surely, 2130121207 is an apocalyptic number.

130121207 is a deficient number, since it is larger than the sum of its proper divisors (1).

130121207 is an equidigital number, since it uses as much as digits as its factorization.

130121207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 130121207 is about 11407.0682911956. The cubic root of 130121207 is about 506.7370914823.

Adding to 130121207 its reverse (702121031), we get a palindrome (832242238).

The spelling of 130121207 in words is "one hundred thirty million, one hundred twenty-one thousand, two hundred seven".