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117211201 = 281941579
BaseRepresentation
bin1101111110010…
…00000001000001
322011112221112121
412333020001001
5220001224301
615344124241
72622164422
oct677100101
9264487477
10117211201
1160187568
1233306681
131b38b753
14117d1649
15a4543a1
hex6fc8041

117211201 has 4 divisors (see below), whose sum is σ = 117255600. Its totient is φ = 117166804.

The previous prime is 117211177. The next prime is 117211231. The reversal of 117211201 is 102112711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102112711 = 372759803.

It is a cyclic number.

It is not a de Polignac number, because 117211201 - 211 = 117209153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117211231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17971 + ... + 23608.

It is an arithmetic number, because the mean of its divisors is an integer number (29313900).

Almost surely, 2117211201 is an apocalyptic number.

It is an amenable number.

117211201 is a deficient number, since it is larger than the sum of its proper divisors (44399).

117211201 is an equidigital number, since it uses as much as digits as its factorization.

117211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44398.

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 117211201 is about 10826.4121942590. The cubic root of 117211201 is about 489.3914435989.

Adding to 117211201 its reverse (102112711), we get a palindrome (219323912).

The spelling of 117211201 in words is "one hundred seventeen million, two hundred eleven thousand, two hundred one".

Divisors: 1 2819 41579 117211201