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12200101 = 17717653
BaseRepresentation
bin101110100010…
…100010100101
3211221211101121
4232202202211
511110400401
61113253541
7205461544
oct56424245
924854347
1012200101
116983131
1241042b1
1326b20c4
14189815b
15110eca1
hexba28a5

12200101 has 4 divisors (see below), whose sum is σ = 12917772. Its totient is φ = 11482432.

The previous prime is 12200063. The next prime is 12200117. The reversal of 12200101 is 10100221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8259876 + 3940225 = 2874^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200101 - 215 = 12167333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200171) 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, 358810 + ... + 358843.

It is an arithmetic number, because the mean of its divisors is an integer number (3229443).

Almost surely, 212200101 is an apocalyptic number.

It is an amenable number.

12200101 is a deficient number, since it is larger than the sum of its proper divisors (717671).

12200101 is an equidigital number, since it uses as much as digits as its factorization.

12200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717670.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 12200101 is about 3492.8642973926. The cubic root of 12200101 is about 230.2083870673.

Adding to 12200101 its reverse (10100221), we get a palindrome (22300322).

The spelling of 12200101 in words is "twelve million, two hundred thousand, one hundred one".

Divisors: 1 17 717653 12200101