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30122201 = 192181461
BaseRepresentation
bin111001011101…
…0000011011001
32002200100220002
41302322003121
530202402301
62553342345
7514014554
oct162720331
962610802
1030122201
111600428a
12a1079b5
1363187b5
14400169b
1529a016b
hex1cba0d9

30122201 has 12 divisors (see below), whose sum is σ = 32036004. Its totient is φ = 28317600.

The previous prime is 30122161. The next prime is 30122221. The reversal of 30122201 is 10222103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3610000 + 26512201 = 1900^2 + 5149^2 .

It is not a de Polignac number, because 30122201 - 26 = 30122137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30122221) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 65111 + ... + 65571.

It is an arithmetic number, because the mean of its divisors is an integer number (2669667).

Almost surely, 230122201 is an apocalyptic number.

It is an amenable number.

30122201 is a deficient number, since it is larger than the sum of its proper divisors (1913803).

30122201 is a wasteful number, since it uses less digits than its factorization.

30122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30122201 is about 5488.3696121890. The cubic root of 30122201 is about 311.1445756189.

Adding to 30122201 its reverse (10222103), we get a palindrome (40344304).

The spelling of 30122201 in words is "thirty million, one hundred twenty-two thousand, two hundred one".

Divisors: 1 19 181 361 461 3439 8759 65341 83441 166421 1585379 30122201