Search a number
-
+
20110210001 = 72709578861
BaseRepresentation
bin10010101110101010…
…010111001111010001
31220220111220111221122
4102232222113033101
5312141203210001
613123303332025
71311230651600
oct225652271721
956814814848
1020110210001
11858a764472
123a92a51015
131b8648475b
14d8abb3a37
157ca78ab1b
hex4aea973d1

20110210001 has 12 divisors (see below), whose sum is σ = 23426545140. Its totient is φ = 17212980960.

The previous prime is 20110209991. The next prime is 20110210009. The reversal of 20110210001 is 10001201102.

It can be written as a sum of positive squares in 2 ways, for example, as 11320960000 + 8789250001 = 106400^2 + 93751^2 .

It is not a de Polignac number, because 20110210001 - 226 = 20043101137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110210009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254690 + ... + 324171.

It is an arithmetic number, because the mean of its divisors is an integer number (1952212095).

Almost surely, 220110210001 is an apocalyptic number.

It is an amenable number.

20110210001 is a deficient number, since it is larger than the sum of its proper divisors (3316335139).

20110210001 is an equidigital number, since it uses as much as digits as its factorization.

20110210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579584 (or 579577 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20110210001 its reverse (10001201102), we get a palindrome (30111411103).

It can be divided in two parts, 201102 and 10001, that multiplied together give a palindrome (2011221102).

The spelling of 20110210001 in words is "twenty billion, one hundred ten million, two hundred ten thousand, one".

Divisors: 1 7 49 709 4963 34741 578861 4052027 28364189 410412449 2872887143 20110210001