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220020012201220 = 225711234176101129
BaseRepresentation
bin110010000001101101100110…
…101010111011010100000100
31001212000201002221120201101221
4302001231212222323110010
5212314301441110414340
62055535444230330124
764225631003261410
oct6201554652732404
91055021087521357
10220020012201220
1164117a65a83360
1220815428ab9944
13959ca4b62ccaa
143c4904da21d40
151a6835aca144a
hexc81b66abb504

220020012201220 has 96 divisors (see below), whose sum is σ = 576077089754880. Its totient is φ = 68574726359040.

The previous prime is 220020012201193. The next prime is 220020012201229. The reversal of 220020012201220 is 22102210020022.

It is a junction number, because it is equal to n+sod(n) for n = 220020012201194 and 220020012201203.

It is not an unprimeable number, because it can be changed into a prime (220020012201229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33011616 + ... + 39112744.

It is an arithmetic number, because the mean of its divisors is an integer number (6000803018280).

Almost surely, 2220020012201220 is an apocalyptic number.

220020012201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220020012201220 is an abundant number, since it is smaller than the sum of its proper divisors (356057077553660).

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

220020012201220 is a wasteful number, since it uses less digits than its factorization.

220020012201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124573 (or 6124571 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220020012201220 its reverse (22102210020022), we get a palindrome (242122222221242).

The spelling of 220020012201220 in words is "two hundred twenty trillion, twenty billion, twelve million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 23417 46834 93668 117085 163919 234170 257587 327838 468340 515174 655676 819595 1030348 1287935 1639190 1803109 2575870 3278380 3606218 5151740 6101129 7212436 9015545 12202258 18031090 24404516 30505645 36062180 42707903 61011290 67112419 85415806 122022580 134224838 170831612 213539515 268449676 335562095 427079030 469786933 671124190 854158060 939573866 1342248380 1879147732 2348934665 4697869330 9395738660 142870137793 285740275586 571480551172 714350688965 1000090964551 1428701377930 1571571515723 2000181929102 2857402755860 3143143031446 4000363858204 5000454822755 6286286062892 7857857578615 10000909645510 11001000610061 15715715157230 20001819291020 22002001220122 31431430314460 44004002440244 55005003050305 110010006100610 220020012201220