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101220332212 = 22791823175709
BaseRepresentation
bin101111001000100110…
…0111011001010110100
3100200021012220122100001
41132101030323022310
53124244401112322
6114255555001044
710212222425236
oct1362114731264
9320235818301
10101220332212
1139a2226981a
121774a599184
1397115a25cc
144c83164256
15297643e827
hex179133b2b4

101220332212 has 24 divisors (see below), whose sum is σ = 179477222400. Its totient is φ = 49941836256.

The previous prime is 101220332203. The next prime is 101220332243. The reversal of 101220332212 is 212233022101.

It is a self number, because there is not a number n which added to its sum of digits gives 101220332212.

It is a congruent number.

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, 488214 + ... + 663922.

It is an arithmetic number, because the mean of its divisors is an integer number (7478217600).

Almost surely, 2101220332212 is an apocalyptic number.

It is an amenable number.

101220332212 is a deficient number, since it is larger than the sum of its proper divisors (78256890188).

101220332212 is a wasteful number, since it uses less digits than its factorization.

101220332212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177615 (or 177613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 101220332212 its reverse (212233022101), we get a palindrome (313453354313).

The spelling of 101220332212 in words is "one hundred one billion, two hundred twenty million, three hundred thirty-two thousand, two hundred twelve".

Divisors: 1 2 4 79 158 316 1823 3646 7292 144017 175709 288034 351418 576068 702836 13881011 27762022 55524044 320317507 640635014 1281270028 25305083053 50610166106 101220332212