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2020012120220 = 2251961328333061
BaseRepresentation
bin11101011001010010000…
…110101101100010011100
321011010000010011220000212
4131121102012231202130
5231043441100321340
64143551502111552
7265640532501623
oct35312206554234
97133003156025
102020012120220
117097561a8a16
122875a9b7b5b8
131186425c3923
146daaa60c6ba
1537829d3ea65
hex1d6521ad89c

2020012120220 has 96 divisors (see below), whose sum is σ = 4475614678080. Its totient is φ = 763710197760.

The previous prime is 2020012120199. The next prime is 2020012120241. The reversal of 2020012120220 is 220212100202.

It is an interprime number because it is at equal distance from previous prime (2020012120199) and next prime (2020012120241).

It is a junction number, because it is equal to n+sod(n) for n = 2020012120195 and 2020012120204.

It is a congruent number.

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, 659917490 + ... + 659920550.

It is an arithmetic number, because the mean of its divisors is an integer number (46620986230).

Almost surely, 22020012120220 is an apocalyptic number.

2020012120220 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 2020012120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2237807339040).

2020012120220 is an abundant number, since it is smaller than the sum of its proper divisors (2455602557860).

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

2020012120220 is a wasteful number, since it uses less digits than its factorization.

2020012120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6535 (or 6533 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2020012120220 its reverse (220212100202), we get a palindrome (2240224220422).

The spelling of 2020012120220 in words is "two trillion, twenty billion, twelve million, one hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 613 1226 2452 2833 3061 3065 5666 6122 6130 11332 11647 12244 12260 14165 15305 23294 28330 30610 46588 53827 56660 58159 58235 61220 107654 116318 116470 215308 232636 232940 269135 290795 538270 581590 1076540 1163180 1736629 1876393 3473258 3752786 6946516 7505572 8671813 8683145 9381965 17343626 17366290 18763930 32995951 34687252 34732580 35651467 37527860 43359065 65991902 71302934 86718130 131983804 142605868 164764447 164979755 173436260 178257335 329528894 329959510 356514670 659057788 659919020 713029340 823822235 1647644470 3295288940 5315821369 10631642738 21263285476 26579106845 53158213690 101000606011 106316427380 202001212022 404002424044 505003030055 1010006060110 2020012120220