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2012210201 = 4742812983
BaseRepresentation
bin111011111101111…
…1110010000011001
312012020022212110202
41313323332100121
513110111211301
6531400351545
7100602335021
oct16773762031
95166285422
102012210201
11942927341
12481a755b5
13260b60c31
14151356a81
15bb9c566b
hex77efe419

2012210201 has 4 divisors (see below), whose sum is σ = 2055023232. Its totient is φ = 1969397172.

The previous prime is 2012210171. The next prime is 2012210261. The reversal of 2012210201 is 1020122102.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2k-2012210201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012210261) 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, 21406445 + ... + 21406538.

It is an arithmetic number, because the mean of its divisors is an integer number (513755808).

Almost surely, 22012210201 is an apocalyptic number.

It is an amenable number.

2012210201 is a deficient number, since it is larger than the sum of its proper divisors (42813031).

2012210201 is an equidigital number, since it uses as much as digits as its factorization.

2012210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42813030.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2012210201 is about 44857.6660226544. Note that the first 3 decimals coincide. The cubic root of 2012210201 is about 1262.4798312760.

Adding to 2012210201 its reverse (1020122102), we get a palindrome (3032332303).

The spelling of 2012210201 in words is "two billion, twelve million, two hundred ten thousand, two hundred one".

Divisors: 1 47 42812983 2012210201