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211112201 = 316810071
BaseRepresentation
bin11001001010101…
…01000100001001
3112201020121111102
430211111010021
5413021042301
632540511145
75142265316
oct1445250411
9481217442
10211112201
11a91927a3
125a84b4b5
1334978181
1420075d0d
1513801b6b
hexc955109

211112201 has 4 divisors (see below), whose sum is σ = 217922304. Its totient is φ = 204302100.

The previous prime is 211112191. The next prime is 211112219. The reversal of 211112201 is 102211112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211112201 - 210 = 211111177 is a prime.

It is a super-2 number, since 2×2111122012 = 89136722822128802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211112701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405005 + ... + 3405066.

It is an arithmetic number, because the mean of its divisors is an integer number (54480576).

Almost surely, 2211112201 is an apocalyptic number.

It is an amenable number.

211112201 is a deficient number, since it is larger than the sum of its proper divisors (6810103).

211112201 is an equidigital number, since it uses as much as digits as its factorization.

211112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810102.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 211112201 is about 14529.7006507361. The cubic root of 211112201 is about 595.4396872444.

Adding to 211112201 its reverse (102211112), we get a palindrome (313323313).

The spelling of 211112201 in words is "two hundred eleven million, one hundred twelve thousand, two hundred one".

Divisors: 1 31 6810071 211112201