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211006201 = 7214928901
BaseRepresentation
bin11001001001110…
…11001011111001
3112201001020002111
430210323023321
5413004144301
632534332321
75141344300
oct1444731371
9481036074
10211006201
11a912009a
125a7ba0a1
133493bb53
1420049437
15137d0551
hexc93b2f9

211006201 has 12 divisors (see below), whose sum is σ = 247112100. Its totient is φ = 179642400.

The previous prime is 211006183. The next prime is 211006219. The reversal of 211006201 is 102600112.

It is an interprime number because it is at equal distance from previous prime (211006183) and next prime (211006219).

It can be written as a sum of positive squares in 2 ways, for example, as 140446201 + 70560000 = 11851^2 + 8400^2 .

It is not a de Polignac number, because 211006201 - 27 = 211006073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211006241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7150 + ... + 21751.

It is an arithmetic number, because the mean of its divisors is an integer number (20592675).

Almost surely, 2211006201 is an apocalyptic number.

It is an amenable number.

211006201 is a deficient number, since it is larger than the sum of its proper divisors (36105899).

211006201 is a wasteful number, since it uses less digits than its factorization.

211006201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29064 (or 29057 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211006201 is about 14526.0524919883. The cubic root of 211006201 is about 595.3400132746.

Adding to 211006201 its reverse (102600112), we get a palindrome (313606313).

The spelling of 211006201 in words is "two hundred eleven million, six thousand, two hundred one".

Divisors: 1 7 49 149 1043 7301 28901 202307 1416149 4306249 30143743 211006201