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20301421301220 = 22351636733084413
BaseRepresentation
bin1001001110110110010110…
…00000010100110111100100
32122212210111221211010010210
410213123023000110313210
510130104302323114340
6111102202202415420
74163505100555503
oct447331300246744
978783457733123
1020301421301220
11651786a081a44
12233a674b01570
13b4355370b887
1450284605883a
152531471e6180
hex1276cb014de4

20301421301220 has 96 divisors (see below), whose sum is σ = 57277716031872. Its totient is φ = 5372502847488.

The previous prime is 20301421301201. The next prime is 20301421301267. The reversal of 20301421301220 is 2210312410302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5039734 + ... + 8124146.

It is an arithmetic number, because the mean of its divisors is an integer number (596642875332).

Almost surely, 220301421301220 is an apocalyptic number.

20301421301220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20301421301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28638858015936).

20301421301220 is an abundant number, since it is smaller than the sum of its proper divisors (36976294730652).

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

20301421301220 is a wasteful number, since it uses less digits than its factorization.

20301421301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085261 (or 3085259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20301421301220 its reverse (2210312410302), we get a palindrome (22511733711522).

The spelling of 20301421301220 in words is "twenty trillion, three hundred one billion, four hundred twenty-one million, three hundred one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 163 326 489 652 673 815 978 1346 1630 1956 2019 2445 2692 3260 3365 4038 4890 6730 8076 9780 10095 13460 20190 40380 109699 219398 329097 438796 548495 658194 1096990 1316388 1645485 2193980 3084413 3290970 6168826 6581940 9253239 12337652 15422065 18506478 30844130 37012956 46266195 61688260 92532390 185064780 502759319 1005518638 1508277957 2011037276 2075809949 2513796595 3016555914 4151619898 5027593190 6033111828 6227429847 7541389785 8303239796 10055186380 10379049745 12454859694 15082779570 20758099490 24909719388 30165559140 31137149235 41516198980 62274298470 124548596940 338357021687 676714043374 1015071065061 1353428086748 1691785108435 2030142130122 3383570216870 4060284260244 5075355325305 6767140433740 10150710650610 20301421301220