Search a number
-
+
210001210 = 2521000121
BaseRepresentation
bin11001000010001…
…01110100111010
3112122011011111121
430201011310322
5412230014320
632501015454
75126660266
oct1441056472
9478134447
10210001210
11a85a4021
125a3b458a
1334679593
141dc670a6
15136828aa
hexc845d3a

210001210 has 8 divisors (see below), whose sum is σ = 378002196. Its totient is φ = 84000480.

The previous prime is 210001199. The next prime is 210001219. The reversal of 210001210 is 12100012.

It can be written as a sum of positive squares in 2 ways, for example, as 171845881 + 38155329 = 13109^2 + 6177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 210001193 and 210001202.

It is not an unprimeable number, because it can be changed into a prime (210001219) 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 3 ways as a sum of consecutive naturals, for example, 10500051 + ... + 10500070.

Almost surely, 2210001210 is an apocalyptic number.

210001210 is a deficient number, since it is larger than the sum of its proper divisors (168000986).

210001210 is a wasteful number, since it uses less digits than its factorization.

210001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21000128.

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

The square root of 210001210 is about 14491.4184950956. The cubic root of 210001210 is about 594.3933368845.

Adding to 210001210 its reverse (12100012), we get a palindrome (222101222).

The spelling of 210001210 in words is "two hundred ten million, one thousand, two hundred ten".

Divisors: 1 2 5 10 21000121 42000242 105000605 210001210