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212131122101310 = 23561821201770001
BaseRepresentation
bin110000001110111010100000…
…001011011011110000111110
31000211002112111122002001121110
4300032322200023123300332
5210301024014224220220
62031055405301142450
762452652646651006
oct6016724013336076
91024075448061543
10212131122101310
11616563381a7635
121b9605236baa26
139149b57171959
143a552b5b21006
15197d03d5c2be0
hexc0eea02dbc3e

212131122101310 has 128 divisors (see below), whose sum is σ = 518355383810688. Its totient is φ = 55544832000000.

The previous prime is 212131122101291. The next prime is 212131122101351. The reversal of 212131122101310 is 13101221131212.

212131122101310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2121311221013102 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3030366310 + ... + 3030436310.

It is an arithmetic number, because the mean of its divisors is an integer number (4049651436021).

Almost surely, 2212131122101310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212131122101310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259177691905344).

212131122101310 is an abundant number, since it is smaller than the sum of its proper divisors (306224261709378).

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

212131122101310 is a wasteful number, since it uses less digits than its factorization.

212131122101310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72910.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 212131122101310 its reverse (13101221131212), we get a palindrome (225232343232522).

The spelling of 212131122101310 in words is "two hundred twelve trillion, one hundred thirty-one billion, one hundred twenty-two million, one hundred one thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 61 122 183 305 366 610 821 915 1642 1830 2017 2463 4034 4105 4926 6051 8210 10085 12102 12315 20170 24630 30255 50081 60510 70001 100162 123037 140002 150243 210003 246074 250405 300486 350005 369111 420006 500810 615185 700010 738222 751215 1050015 1230370 1502430 1655957 1845555 2100030 3311914 3691110 4270061 4967871 8279785 8540122 9935742 12810183 16559570 21350305 24839355 25620366 42700610 49678710 57470821 64050915 101013377 114941642 128101830 141192017 172412463 202026754 282384034 287354105 303040131 344824926 423576051 505066885 574708210 606080262 705960085 847152102 862062315 1010133770 1411920170 1515200655 1724124630 2117880255 3030401310 3505720081 4235760510 7011440162 8612713037 10517160243 17225426074 17528600405 21034320486 25838139111 35057200810 43063565185 51676278222 52585801215 86127130370 105171602430 115918645957 129190695555 231837291914 258381391110 347755937871 579593229785 695511875742 1159186459570 1738779689355 3477559378710 7071037403377 14142074806754 21213112210131 35355187016885 42426224420262 70710374033770 106065561050655 212131122101310