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212201312210 = 25171248243013
BaseRepresentation
bin1100010110100000101…
…1110000111111010010
3202021201200012120021122
43011220023300333102
511434042013442320
6241252310322242
721221355251546
oct3055013607722
9667650176248
10212201312210
1181aa31216a8
1235161959382
131701a0aa344
14a3b0743a26
1557be70cd25
hex31682f0fd2

212201312210 has 16 divisors (see below), whose sum is σ = 404430736536. Its totient is φ = 79887552768.

The previous prime is 212201312209. The next prime is 212201312221. The reversal of 212201312210 is 12213102212.

212201312210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 212199343801 + 1968409 = 460651^2 + 1403^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 624121337 + ... + 624121676.

Almost surely, 2212201312210 is an apocalyptic number.

212201312210 is a deficient number, since it is larger than the sum of its proper divisors (192229424326).

212201312210 is a wasteful number, since it uses less digits than its factorization.

212201312210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248243037.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212201312210 its reverse (12213102212), we get a palindrome (224414414422).

The spelling of 212201312210 in words is "two hundred twelve billion, two hundred one million, three hundred twelve thousand, two hundred ten".

Divisors: 1 2 5 10 17 34 85 170 1248243013 2496486026 6241215065 12482430130 21220131221 42440262442 106100656105 212201312210