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20102020121100 = 2235279848186503
BaseRepresentation
bin1001001001000010111011…
…10001001100001000001100
32122011201211100022122002110
410210201131301030020030
510113322414122333400
6110430423543224020
74143215540524161
oct444413561141014
978151740278073
1020102020121100
116450245333005
122307aa5a48010
13b2a7c64940b8
144d6d2b6d4068
1524cd76609e50
hex12485dc4c20c

20102020121100 has 72 divisors (see below), whose sum is σ = 58898070837760. Its totient is φ = 5292683772480.

The previous prime is 20102020121069. The next prime is 20102020121111. The reversal of 20102020121100 is 112102020102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424069552 + ... + 424116951.

Almost surely, 220102020121100 is an apocalyptic number.

20102020121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102020121100 is an abundant number, since it is smaller than the sum of its proper divisors (38796050716660).

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

20102020121100 is a wasteful number, since it uses less digits than its factorization.

20102020121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848186599 (or 848186592 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102020121100 its reverse (112102020102), we get a palindrome (20214122141202).

The spelling of 20102020121100 in words is "twenty trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, one hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 79 100 150 158 237 300 316 395 474 790 948 1185 1580 1975 2370 3950 4740 5925 7900 11850 23700 848186503 1696373006 2544559509 3392746012 4240932515 5089119018 8481865030 10178238036 12722797545 16963730060 21204662575 25445595090 42409325150 50891190180 63613987725 67006733737 84818650300 127227975450 134013467474 201020201211 254455950900 268026934948 335033668685 402040402422 670067337370 804080804844 1005101006055 1340134674740 1675168343425 2010202012110 3350336686850 4020404024220 5025505030275 6700673373700 10051010060550 20102020121100