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12201011012020 = 2254379187179161
BaseRepresentation
bin1011000110001100010011…
…1011010110000110110100
31121012101221102202112001111
42301203010323112012310
53044400132304341040
641541022253404404
72366331266303305
oct261430473260664
947171842675044
1012201011012020
113984468700326
121450779a99704
136a672030330c
143027640767ac
15162599eeddea
hexb18c4ed61b4

12201011012020 has 48 divisors (see below), whose sum is σ = 26218463882688. Its totient is φ = 4766819823360.

The previous prime is 12201011012017. The next prime is 12201011012033. The reversal of 12201011012020 is 2021011010221.

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, 68011240 + ... + 68190400.

It is an arithmetic number, because the mean of its divisors is an integer number (546217997556).

Almost surely, 212201011012020 is an apocalyptic number.

12201011012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201011012020 is an abundant number, since it is smaller than the sum of its proper divisors (14017452870668).

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

12201011012020 is a wasteful number, since it uses less digits than its factorization.

12201011012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258400 (or 258398 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12201011012020 its reverse (2021011010221), we get a palindrome (14222022022241).

The spelling of 12201011012020 in words is "twelve trillion, two hundred one billion, eleven million, twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 79187 158374 179161 316748 358322 395935 716644 791870 895805 1583740 1791610 3405041 3583220 6810082 7703923 13620164 15407846 17025205 30815692 34050410 38519615 68100820 77039230 154078460 14187222107 28374444214 56748888428 70936110535 141872221070 283744442140 610050550601 1220101101202 2440202202404 3050252753005 6100505506010 12201011012020