Search a number
11321201 = 17665953
BaseRepresentation
bin101011001011…
…111101110001
3210022011202202
4223023331301
510344234301
61042352545
7165141263
oct53137561
923264682
1011321201
116432871
12395b755
132465048
141709b33
15ed966b
hexacbf71

11321201 has 4 divisors (see below), whose sum is σ = 11987172. Its totient is φ = 10655232.

The previous prime is 11321197. The next prime is 11321203. The reversal of 11321201 is 10212311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10212311 = 14968539.

It can be written as a sum of positive squares in 2 ways, for example, as 4950625 + 6370576 = 2225^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321201 - 22 = 11321197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321203) 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, 332960 + ... + 332993.

It is an arithmetic number, because the mean of its divisors is an integer number (2996793).

Almost surely, 211321201 is an apocalyptic number.

It is an amenable number.

11321201 is a deficient number, since it is larger than the sum of its proper divisors (665971).

11321201 is an equidigital number, since it uses as much as digits as its factorization.

11321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665970.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11321201 is about 3364.6992436175. The cubic root of 11321201 is about 224.5419554096.

Adding to 11321201 its reverse (10212311), we get a palindrome (21533512).

The spelling of 11321201 in words is "eleven million, three hundred twenty-one thousand, two hundred one".

Divisors: 1 17 665953 11321201