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20001021002112 = 273591018740727
BaseRepresentation
bin1001000110000110110011…
…10000001000000110000000
32121211002010112122210020210
410203003121300020012000
510110144042334031422
6110312201525434120
74133011642264263
oct443033160100600
977732115583223
1020001021002112
116411426a26037
1222b03b956b940
13b2111b9954b7
144d20a9ab4cda
1524a41481510c
hex1230d9c08180

20001021002112 has 128 divisors (see below), whose sum is σ = 54563120467200. Its totient is φ = 6489114982400.

The previous prime is 20001021002071. The next prime is 20001021002191. The reversal of 20001021002112 is 21120012010002.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×200010210021122 (a number of 27 digits) contains 22 as substring.

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

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, 2082108 + ... + 6658619.

It is an arithmetic number, because the mean of its divisors is an integer number (426274378650).

Almost surely, 220001021002112 is an apocalyptic number.

It is an amenable number.

20001021002112 is an abundant number, since it is smaller than the sum of its proper divisors (34562099465088).

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

20001021002112 is a wasteful number, since it uses less digits than its factorization.

20001021002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740904 (or 8740892 counting only the distinct ones).

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

Adding to 20001021002112 its reverse (21120012010002), we get a palindrome (41121033012114).

The spelling of 20001021002112 in words is "twenty trillion, one billion, twenty-one million, two thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 59 64 96 101 118 128 177 192 202 236 303 354 384 404 472 606 708 808 944 1212 1416 1616 1888 2424 2832 3232 3776 4848 5664 5959 6464 7552 9696 11328 11918 12928 17877 19392 22656 23836 35754 38784 47672 71508 95344 143016 190688 286032 381376 572064 762752 1144128 2288256 8740727 17481454 26222181 34962908 52444362 69925816 104888724 139851632 209777448 279703264 419554896 515702893 559406528 839109792 882813427 1031405786 1118813056 1547108679 1678219584 1765626854 2062811572 2648440281 3094217358 3356439168 3531253708 4125623144 5296880562 6188434716 7062507416 8251246288 10593761124 12376869432 14125014832 16502492576 21187522248 24753738864 28250029664 33004985152 42375044496 49507477728 52085992193 56500059328 66009970304 84750088992 99014955456 104171984386 113000118656 156257976579 169500177984 198029910912 208343968772 312515953158 339000355968 416687937544 625031906316 833375875088 1250063812632 1666751750176 2500127625264 3333503500352 5000255250528 6667007000704 10000510501056 20001021002112