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12200111212220 = 2251861472169431
BaseRepresentation
bin1011000110001000111101…
…0010111000011010111100
31121012022121201121221202222
42301202033102320122330
53044341311432242340
641540353111504512
72366300062160261
oct261421722703274
947168551557688
1012200111212220
1139840467a5428
121450568688138
136a6608a79ab9
143026ba76d268
151625460118b5
hexb188f4b86bc

12200111212220 has 48 divisors (see below), whose sum is σ = 25639799524416. Its totient is φ = 4876318848000.

The previous prime is 12200111212181. The next prime is 12200111212243. The reversal of 12200111212220 is 2221211100221.

12200111212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 175680905 + ... + 175750335.

It is an arithmetic number, because the mean of its divisors is an integer number (534162490092).

Almost surely, 212200111212220 is an apocalyptic number.

12200111212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200111212220 is an abundant number, since it is smaller than the sum of its proper divisors (13439688312196).

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

12200111212220 is a wasteful number, since it uses less digits than its factorization.

12200111212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76022 (or 76020 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12200111212220 its reverse (2221211100221), we get a palindrome (14421322312441).

The spelling of 12200111212220 in words is "twelve trillion, two hundred billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1861 3722 4721 7444 9305 9442 18610 18884 23605 37220 47210 69431 94420 138862 277724 347155 694310 1388620 8785781 17571562 35143124 43928905 87857810 129211091 175715620 258422182 327783751 516844364 646055455 655567502 1292110910 1311135004 1638918755 2584221820 3277837510 6555675020 610005560611 1220011121222 2440022242444 3050027803055 6100055606110 12200111212220