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2020221220020 = 2235103132657957
BaseRepresentation
bin11101011001011110100…
…100010111010010110100
321011010112200122021000220
4131121132210113102310
5231044403113020040
64144024331534340
7265645652016213
oct35313644272264
97133480567026
102020221220020
11709853236773
12287647bba3b0
13118676a15b13
146daca2bd07a
153783d3952d0
hex1d65e9174b4

2020221220020 has 48 divisors (see below), whose sum is σ = 5662106126208. Its totient is φ = 538203114880.

The previous prime is 2020221219883. The next prime is 2020221220033. The reversal of 2020221220020 is 200221220202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16267119 + ... + 16390838.

It is an arithmetic number, because the mean of its divisors is an integer number (117960544296).

Almost surely, 22020221220020 is an apocalyptic number.

2020221220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020221220020 is an abundant number, since it is smaller than the sum of its proper divisors (3641884906188).

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

2020221220020 is a wasteful number, since it uses less digits than its factorization.

2020221220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32659000 (or 32658998 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2020221220020 its reverse (200221220202), we get a palindrome (2220442440222).

The spelling of 2020221220020 in words is "two trillion, twenty billion, two hundred twenty-one million, two hundred twenty thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1031 2062 3093 4124 5155 6186 10310 12372 15465 20620 30930 61860 32657957 65315914 97973871 130631828 163289785 195947742 326579570 391895484 489869355 653159140 979738710 1959477420 33670353667 67340707334 101011061001 134681414668 168351768335 202022122002 336703536670 404044244004 505055305005 673407073340 1010110610010 2020221220020