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201212 = 221117269
BaseRepresentation
bin110001000111111100
3101020000022
4301013330
522414322
64151312
71465424
oct610774
9336008
10201212
111281a0
1298538
137077b
1453484
153e942
hex311fc

201212 has 24 divisors (see below), whose sum is σ = 408240. Its totient is φ = 85760.

The previous prime is 201211. The next prime is 201233. The reversal of 201212 is 212102.

201212 is a modest number, since divided by 1212 gives 20 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614 + ... + 882.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2201212 is an apocalyptic number.

201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201212 is an abundant number, since it is smaller than the sum of its proper divisors (207028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201212 is a wasteful number, since it uses less digits than its factorization.

201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 299 counting only the distinct ones).

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

The square root of 201212 is about 448.5666059795. The cubic root of 201212 is about 58.5982472578.

Adding to 201212 its reverse (212102), we get a palindrome (413314).

The spelling of 201212 in words is "two hundred one thousand, two hundred twelve", and thus it is an iban number.

Divisors: 1 2 4 11 17 22 34 44 68 187 269 374 538 748 1076 2959 4573 5918 9146 11836 18292 50303 100606 201212