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20201210002220 = 225137310110538039
BaseRepresentation
bin1001001011111011101011…
…11100100011101100101100
32122112012212001120200011012
410211331311330203230230
510121434034230032340
6110544150250444352
74153326546563102
oct445756574435454
978465761520135
1020201210002220
116489315446875
1223231684336b8
13b36c731b9c50
144dba5ad13c72
1525072e66e565
hex125f75f23b2c

20201210002220 has 96 divisors (see below), whose sum is σ = 46770182040960. Its totient is φ = 7283891865600.

The previous prime is 20201210002219. The next prime is 20201210002243. The reversal of 20201210002220 is 2220001210202.

It is a junction number, because it is equal to n+sod(n) for n = 20201210002195 and 20201210002204.

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, 3352040 + ... + 7185999.

It is an arithmetic number, because the mean of its divisors is an integer number (487189396260).

Almost surely, 220201210002220 is an apocalyptic number.

20201210002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201210002220 is an abundant number, since it is smaller than the sum of its proper divisors (26568972038740).

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

20201210002220 is a wasteful number, since it uses less digits than its factorization.

20201210002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538235 (or 10538233 counting only the distinct ones).

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

Adding to 20201210002220 its reverse (2220001210202), we get a palindrome (22421211212422).

The spelling of 20201210002220 in words is "twenty trillion, two hundred one billion, two hundred ten million, two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 73 101 130 146 202 260 292 365 404 505 730 949 1010 1313 1460 1898 2020 2626 3796 4745 5252 6565 7373 9490 13130 14746 18980 26260 29492 36865 73730 95849 147460 191698 383396 479245 958490 1916980 10538039 21076078 42152156 52690195 105380390 136994507 210760780 273989014 547978028 684972535 769276847 1064341939 1369945070 1538553694 2128683878 2739890140 3077107388 3846384235 4257367756 5321709695 7692768470 10000599011 10643419390 13836445207 15385536940 20001198022 21286838780 27672890414 40002396044 50002995055 55345780828 69182226035 77696961547 100005990110 138364452070 155393923094 200011980220 276728904140 310787846188 388484807735 776969615470 1010060500111 1553939230940 2020121000222 4040242000444 5050302500555 10100605001110 20201210002220