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121130030201 = 205095906189
BaseRepresentation
bin111000011001111101…
…0011001010001111001
3102120122202112002111212
41300303322121101321
53441033241431301
6131351340532505
711515500161045
oct1606372312171
9376582462455
10121130030201
1147409820584
121b586251135
13b5653509ab
145c11461025
15323e2be4bb
hex1c33e99479

121130030201 has 4 divisors (see below), whose sum is σ = 121135956900. Its totient is φ = 121124103504.

The previous prime is 121130030123. The next prime is 121130030207. The reversal of 121130030201 is 102030031121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102030031121 = 611672623461.

It can be written as a sum of positive squares in 2 ways, for example, as 31444155625 + 89685874576 = 177325^2 + 299476^2 .

It is a cyclic number.

It is not a de Polignac number, because 121130030201 - 214 = 121130013817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121130030207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2932586 + ... + 2973603.

It is an arithmetic number, because the mean of its divisors is an integer number (30283989225).

Almost surely, 2121130030201 is an apocalyptic number.

It is an amenable number.

121130030201 is a deficient number, since it is larger than the sum of its proper divisors (5926699).

121130030201 is an equidigital number, since it uses as much as digits as its factorization.

121130030201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926698.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 121130030201 its reverse (102030031121), we get a palindrome (223160061322).

The spelling of 121130030201 in words is "one hundred twenty-one billion, one hundred thirty million, thirty thousand, two hundred one".

Divisors: 1 20509 5906189 121130030201