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201111213020 = 22527785742359
BaseRepresentation
bin1011101101001100101…
…0011001001111011100
3201020002210020011012012
42323103022121033130
511243333432304040
6232220023130352
720346503051054
oct2732312311734
9636083204165
10201111213020
1178322044a73
1232b878a39b8
1315c705c7883
149a3b8dc564
155370cc2865
hex2ed32993dc

201111213020 has 48 divisors (see below), whose sum is σ = 424362818880. Its totient is φ = 80058653184.

The previous prime is 201111213011. The next prime is 201111213041. The reversal of 201111213020 is 20312111102.

It is a junction number, because it is equal to n+sod(n) for n = 201111212986 and 201111213004.

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, 4726601 + ... + 4768959.

It is an arithmetic number, because the mean of its divisors is an integer number (8840892060).

Almost surely, 2201111213020 is an apocalyptic number.

201111213020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111213020 is an abundant number, since it is smaller than the sum of its proper divisors (223251605860).

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

201111213020 is a wasteful number, since it uses less digits than its factorization.

201111213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43502 (or 43500 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201111213020 its reverse (20312111102), we get a palindrome (221423324122).

The spelling of 201111213020 in words is "two hundred one billion, one hundred eleven million, two hundred thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 277 554 857 1108 1385 1714 2770 3428 4285 5540 8570 17140 42359 84718 169436 211795 237389 423590 474778 847180 949556 1186945 2373890 4747780 11733443 23466886 36301663 46933772 58667215 72603326 117334430 145206652 181508315 234668860 363016630 726033260 10055560651 20111121302 40222242604 50277803255 100555606510 201111213020